2D 2-Dimensional
3ACC 3A Central Control
3D 3-Dimensional
3M Minnesota Mining and Manufacturing
4GL Fourth Generation Language
4H Head, Heart, Hands, Health
5XBCOER 5 X-Bar Central Office Equipment Reports system, "5XB COER"
AAAAAA Association for the Abolition of Abused Abbreviations and Asinine Acronyms
AAA American Automobile Association
AAA Anti-Aircraft Artillery
AA Administrative Assistant
AA Affirmative Action committee
AAAL American Academy of Arts and Letters
AA Alcoholics Anonymous
AA American Airlines
AA Antiaircraft Artillery
AAAS American Association for the Advancement of Science
AA Associate in Accounting
AA Astronomy and Astrophysics, "A&A"
AA Automobile Association (in England)
A Aftermath
AAII American Association of Individual Investors
AAMOF As A Matter Of Fact
AAMSI American Association for Medical Systems Informatics
AAO Anglo-Australian Observatory
AAP Affirmative Action Program
AARC Anglo-American Cataloging Rules
AARP Appletalk ARP
AAS American Astronomical Society
AAS Atom Absorption Spectrometry
AAVSO American Association of Variable Star Observers
AAX Automated Attendant eXchange
ABA American Bar Association
ABA American Basketball Association
ABA American Booksellers Association
AB Able Bodied seaman
ABATS Automatic Bit Access Test System
ABBR ABBReviation
ABC American Broadcasting Company
ABEL Advanced Boolean Expression Language (a Data-I/O Trademark)
ABHC Average Busy Hour Calls
ABI American Bell Inc
ABI Application Binary Interface (SunOS and SV application sw interface std)
ABM Asynchronous Balanced Mode
ABP Alt.Binary.Pictures
ABPE* Alt.Binaries.Pictures.Erotica.* (.bondage, .leather, etc.)
ABS Acrylonitrile Butadiene-Styrene (plastic)
ABS Alternative Billing Service
ABS American Bureau of Shipping
ABS Anti-Blocking System
ABSBH Average Busy Season Busy Hour
ACAA Agricultural Conservation and Adjustment Administration
AC Access Control
AC Adaptive Control
AC Alternating Current (ac, see also DC)
AC Answer Center (Sun)
AC Ante Christum (before Christ)
AC Ante Cibum (before meals)
ACAWS Advisory, Caution, And Warning System
ACB Annoyance Call Bureau
ACBL American Contract Bridge League
ACC Argonne Code Center
ACC Audio Communications Controller
ACCRA American Chamber of Commerce Research Association
ACCS Army Command and Control System
ACCS Automated Calling Card Service
ACCT Account
ACDA Automatic Call Disposition Analyzer
ACD Automatic Call Distributor [telephony]
ACE Advanced Composition Explorer
ACE Advanced Computing Environments [Corporate name]
ACE Automatic Calibration and Equalization
ACE Automatic Calling Equipment
ACF Advanced Communications Functions
ACH Attempt per Circuit per Hour
ACHEFT Automated ClearingHouse Electronic Funds Transfer
ACIA Asynchronous Communications Interface Adapter
ACK ACKnowledge
ACK Amsterdam Compiler Kit
ACL Access Control List
ACL Advanced Cmos Logic
ACLU American Civil Liberties Union
ACM Access Control Machine
ACM Association for Computing Machinery
ACO Acronym Control Officer
ACOF Attendant Control Of Facilities
ACP ACtion Point
ACRNEMA a medical imaging standard, "ACR/NEMA"
ACRV Assured Crew Return Vehicle (or) Astronaut Crew Rescue Vehicle
ACS Advanced Communications System
ACS Australian Computer Science
ACSE Association Control Service Entity (ISO/CCITT layer 7)
ACSNET Acedemic Computing Services NETwork
ACSU Advanced t-1 Channel Service Unit
ACTPU ACTivate Physical Unit (SNA)
ACTS Advanced Communications Technology Satellite
ACTS Automated Coin Toll Service
ACTS Automatic Coin Telephone Service [telephony]
ACTUP AIDS Coalition To Unleash Power, "ACT UP"
ACU Alarm Control Unit
ACU Automatic Calling Unit
ACW Alternating Continuous Waves
ACWP Actual Cost of Work Performed
ADA Air Defense Artillery
ADA Alternate Delay Accumulation
AD Addendum
AD After Date
AD Analog to Digital converter, "A/D" (see ADC)
AD Anno Domini (in the year of our Lord)
AD Application Development
ADB A DeBugger
ADB Apple Desktop Bus
ADC Analog to Digital Converter
ADCCP Advanced Data Communications Control Procedure
ADCI Automatic Display Call Indicator
ADD Advanced Dungeons & Dragons, "AD&D"
ADDCP Advanced Data Communication Control Procedure
ADEW Andrew Development Environment Workbench
ADF Automatic Direction Finder
ADFRF Ames-Dryden Flight Research Facility (was DFRF) (NASA)
AD(H)D Attention Deficit (Hyperactivity) Disorder
ADI Acceptable Daily Input
ADI Anolog Device Inc
ADM Additional Dealer Markup
ADM ADMiral
ADM Advanced Micro Devices
ADMD Administration Management Domain
ADN Abbreviated Dialing Number
ADP Adenosine Di-Phosphate
ADP Administrative Data Processing
ADP Advanced Data Processing
ADP Automatic Data Processing
ADPCM Pulse Code Modulation with Adaptive Quantization
ADSL Asymmetric Digital Subscriber Line
ADS Advanced Digital System
ADS Application Development System
ADS Audio Distribution System
ADS Automatic Voice System
ADS Auxilary Data System
ADSP AppleTalk Data Stream Protocol
ADSR Attack Decay Sustain Release
ADT Abstract Data Type
ADT Atlantic Daylight Time
AEA American Electronics Association
AEA Atomic Energy Authority
AE Application Entity/Environment/Execution/Engineering (APE)
AEC Architectural Engineering Construction
AEC Atomic Energy Commission
AEF American Expeditionary Force (see BEF)
AEGIS Advanced Electronic Guidance and Instrumentation System
AES Application Environment Specification
AFACTS Automatic FACilities Test System
AF Address Family (sockets)
AFADS Automatic Force Adjustment Data System
AF Adventures in Fantasy
AFAICR As Far As I Can Recall
AFAICT As Far As I Can Tell
AFAIK As Far As I Know
AFAIR As Far As I Recall
AF Air Force
AFATDS Advanced Field Artillery Tactical Data System
AF Audio Frequency
AFB Air Force Base
AFCAC Air Force Computer Acquisition Center
AFC American Football Conference
AFC Automatic Frequency/Flight Control
AFC Away From Computer
AFCC Air Force Communications Command
AFGE American Federation of Government Employees
AFI Authority and Format Identifier
AFIPS American Federation of Information Processing Societies
AFK Away From Keyboard
AFL American Federation of Labor
AFL American Football League
AFLCIO American Federation of Labor; Congress of Industrial Organizations, "AFL-CIO"
AFM Adobe Font Metrics
AFNOR Association Francaise de NORmalization
AFP Appletalk Filing Protocol
AFS Andrew File System
AFSC Air Force Systems Command
AFSCME American Federation of State, County and Municipal Employees
AFSK Automatic Frequency Shift Keying
AFTRA American Federation of Television and Radio Artists
AFUU Association Francaise des Utilisateurs d'Unix
AG Adjutant General
AG Arcade Game
AG Attorney General
AGCT Army General Classification Test
AGL Above Ground Level
AGM Air-to-Ground Missile
AGN Active Galactic Nucleus
AGU American Geophysical Union
AHA American Homebrew Association
AH Artificial Horizon
AH Avalon Hill (major war game manufacturer)
AHL American Hockey League
AHQ Air HeadQuarters
AIAA American Institute of Aeronautics and Astronautics
AIA American Institute of Architects
AIA Application Integration Architecture
AI Allegheny International
AI Amnesty International
AI Anal Intrusion
AI Artificial Insemination
AI Artificial Intelligence
AI Attitude Indicator
AIC Automatic Intercept Center
AICC Automatic Intercept Communications Controller
AID Agency for International Development
AIDDE Ames' Interactive Dynamic Display Editor
AIDS Acquired ImmunoDeficiency Syndrome
AIM Air Interception Missile
AIM Airman's Information Manual
AIMS Advanced Inventory Management System
AIOD Automatic Identification Outward Dialing
AIPS Astronomical Image Processing System
AIS Action Item System
AIS Automatic Intercept System
AIUI As I Understand It
AIX Advanced Interactive eXecutive (unix)
AJ Astronomical Journal
AKA Also Known As
AK Alaska
ALA American Library Association
ALA Automobile Legal Association
AL Alabama
AL American League (baseball)
ALAP AppleTalk-LocalTalk Link Access Protocol
ALBM Air-to-Land Ballistic Missile
ALBO Automatic Line BuildOut
ALC Automatic Load Control
ALEXIS Array of Low Energy X-ray Imaging Sensors
ALFA Anonima Lombarda Fabbrica Automobili
ALFE Analog Line Front End
ALGOL ALGorithmic Oriented Language
ALI Automatic Location Indentification
ALIT Automatic Line Insulation Testing
ALM Asychronous Line Module
ALM Asynchronous Line Multiplexer
ALMS alt.lifestyle.master.slave
ALOL Actually Laughing Out Loud
ALPO Association of Lunar and Planetary Observers
ALRU Automatic Line Record Update
ALS Advanced Launch System [Space]
ALS Automated List Service
ALU Arithmetic Logic Unit
AMA American Medical Association
AMA Association for Model Aviation
AMA Automatic Message Accounting
AMACS Automatic Message Accounting Collection System
AM Administrative Module
AM Agricultural and Mechanical, "A&M"
AM Air Marshal
AM Alpes-Maritimes, "A.-M."
AM American, "Am."
AM Americium, "Am"
AM Amplitude Modulation
AM anno mundi (in the year of the world)
AM Ante Meridiem, "a.m." (before noon)
AMARC Automatic Message Accounting Recording Center
AMASE Automatic Message Accounting Standard Entry
AMAT Automatic Message Accounting Transmitter
AMATPS Automatic Message Accounting TeleProcessing System
AMBA Association of Master of Business Administration
AMC Albany Medical College
AMD Advanced Micro Devices [Corporate name]
AMERITECH AMERican Information TECHnologies
AMEX AMerican EXpress
AMI American Micro System Inc
AMORC Ancient Mystic Order Rosae Crucis
AMP Adenosine MonoPhosphate
AMPAS Academy of Motion Picture Arts and Sciences
AMPS Advanced Mobile Phone Service
AMRAAM Advanced Medium Range Air-To-Air Missile
AMROC American Rocket Company [Space]
AMSAT radio AMateur SATellite corp.
AMT Active Memory Technology
AMU Atomic Mass Unit
AMVET AMerican VETeran
ANA American Nurses Association
ANA Automatic Number Announcement
ANAC Automatic Number Announcement Circuit [telephony]
AN Associated Number
ANC All Number Calling [telephony]
ANC American Network Communications
ANC Army Nurse Corps
ANDF Architecture-Neutral Distribution Format
ANF Automatic Number Forwarding
ANFSCD And Now For Something Completely Different
ANG Air National Guard
ANI Automatic Number Identification [telephony]
ANIF Automatic Number Identification Failure
ANL Argonne National Laboratory
ANOVA ANalysis Of VAriance
ANPA American Newspaper Publishers Association
ANSI American National Standards Institute
ANU Australian National University
ANZUS Australia, New Zealand, United States
AOA Abort Once Around (Shuttle abort plan)
AO Account Of
AOCS Attitude and Orbit Control System
AOL Absent Over Leave (see AWOL)
AOPA Aircraft Owners and Pilots Association
AOP Annual Operating Plan
AOQ Average Outgoing Quality
AOS Academic Operating System
AOS Alternate Operator Service [telephony]
AOSS Auxilliary Operator Service System
AOW Asia and Oceania Workshop
APA All Points Addressable
AP Access Point
AP Accounts Payable, "A/P"
AP Additional Premium
AP Age Play
AP All Points
AP Application Process
AP Associated Press
AP Attached Processor
APB All Points Bulletin
APC AMARC Protocol Converter
APDA Apple Programmers and Developers Association
APDU Application Protocol Data Unit
APE APplication Engineering
APG Aberdeen Proving Ground
API American Petroleum Institute
API Application Program(ming) Interface
APICS American Production and Inventory Control Society
APJ Astrophysical Journal, "Ap.J", "ApJ"
APL A Programming Language
APM Attached Pressurized Module (a.k.a. Columbus)
APO Alpha Pi (?) Omega, service fraternity
APO Army Post Office
APP Application Portability Profile
APPC Advanced Peer-to-Peer Communications
APPC Advanced Program-to-Program Communication (IBM)
APR Annual Percentage Rate
APS Automatic Protection Switch
APSE Ada Programming Support Environment
APT Attached Proton Test
APU Auxiliary Power Unit
AQ Accumulator-Quotient register
AQL Acceptable Quality Level
AR Accounts Receivable, "A/R"
AR Address Register
AR Alarm Report
ARAMIS American Rheumatic Arthritis Medical Information System
AR Arkansas
ARC Advanced RISC Computing
ARC American Red Cross
ARC Ames Research Center (NASA)
ARC Audio Response Controller
ARCNET Attached Resource Computer local area NETwork
ARCO Atlantic Richfield COmpany
ARIS Audichron Recorded Information System
ARLL Advanced Run-Length Limited encoding
ARM Acorn Risc Machine
ARM Adjustable Rate Mortgage
ARM Annotated Reference Manual
ARO After Receipt of Order
ARPA Advanced Research Projects Agency (of the DoD, see DARPA)
ARP Address Resolution Protocol (Internet->Ethernet)
ARPANET Advanced Research Projects Agency NETwork
ARQ Automatic Repeat reQuest
ARRL Amateur Radio Relay League
ARSA Airport Radar Service Area
ARS Alternate Route Selection
ARSB Automated Repair Service Bureau
ARTCC Air Route Traffic Control Center
ARTEMIS Advanced Relay TEchnology MISsion
ARU Audio Response Unit
ARV American Revised Version
ASA Acetyl Salicylic Acid
ASA American Standards Association (now ANSI)
ASA Astronomical Society of the Atlantic
ASAIGAC As Soon As I Get A Chance
AS Anglo-Saxon
ASAP As Soon As Possible
ASB Alt.Sex.Bondage
ASC Accredited Standards Committee
ASC Additional Sense Code
ASCAP American Society of Composers, Authors, and Publishers
ASCC Automatic Sequence-Controlled Calculator
ASCII American Standard Code for Information Interchange
ASCQ Additional Sense Code Qualifier
ASDIC Anti-Submarine Detection Investigation Committee (British for sonar)
ASDSP Application-Specific Digital Signal Processor
ASF* alt.sex.fetish.*
ASFD alt.sex.femdom/ alt.sex.fetish.diapers
ASG Automated Sciences Group
ASHRAE Amer. Soc. of Heating, Refrigerating and Air-cond. Engineers, inc.
ASI Agenzia Spaziale Italiano
ASI Asynchronous SCSI Interface
ASI Automatic System Installation
ASIC Application Specific Integrated Circuit
ASIS Aromatic Solvent Induced Shift
ASK Akademische Software Kooperation
ASK Amplitude Shift Keying
ASL (a/s/l) Age, Sex, Location (usually impolite IRC query)
ASM American Society of Metals
ASME American Society of Mechanical Engineers
ASN1 Abstract Syntax Notation One, "ASN.1"
ASN Abstract Syntax Notation
ASOC Administrative Service Oversight Center
ASP Aggregated Switch Procurement
ASP Appletalk Session Protocol
ASPEN Automatic System for Performance Evaluation of the Network
ASR Airport Surveillance Radar
ASRM Advanced Solid Rocket Motor
ASRS Aviation Safety Reporting System
ASS Alt.Sex.Spanking/Stories, depending on context
ASSR Autonomous Soviet Socialist Republic
AST Applied System Technology
AST Asyncronous System Trap
AST Atlantic Standard Time
ASTM American Society of Testing and Materials
ASV American Standard Version
ATA Airport Traffic Area
ATA AT Attachment
ATA Automatic Trouble Analysis
ATACC Advanced Tactical Air Command Central
AT Access Tandem
AT Advanced Technology
AT Atlantic Time
ATB Advanced Technology Bomber (stealth bomber)
ATB All Trunks Busy
ATB Alt.Talk.Bestiality
ATC Air Traffic Control
ATC Atsugi Technical Center
ATC Automatic Transmission Control
ATDRS Advanced Tracking and Data Relay Satellite
ATE Automatic Test Equipment
ATEOTD At The End of the Day
ATF Advanced Technology Fighter
ATH Abbreviated Trouble History
ATI Automatic Test Inhibit
ATIS Atherton Tools Interface Specification
ATIS Automatic Terminal Information Service
ATIS Automatic Transmitter Identification System
ATK Andrew ToolKit
ATLAS Atmospheric Laboratory for Applications and Science
ATM Adobe Type Manager
ATM Amateur Telescope Maker
ATM Asynchronous Transfer Mode
ATM Asynchronous Transfer Mode
ATM At The Moment
ATM Automatic Teller Machine
ATMS Automated Trunk Measurement System
ATN Automated Test Network
ATO Abort To Orbit (Shuttle abort plan)
ATOMS AT&t Optimized Materials Simulator
ATP2 AppleTalk Phase 2
ATP Adenosine TriPhosphate
ATP Airline Transport Pilot (highest grade of pilot certificate)
ATP All Tests Pass
ATP Appletalk Transaction Protocol
ATPCO Airline Tariff Publishing COmpany
ATR Alternate Trunk Routing
ATR Apollo Token Ring
ATRS Automated Trouble Reporting System
ATS Automated Test System
ATSL Along The Same Line
ATT American Telephone & Telegraph, "AT&T"
ATTC Automatic Transmission Test and Control circuit
ATTCOM American Telephone & Telegraph COMmunications
ATTIS American Telephone & Telegraph Information Systems
ATV All Terrain Vehicle
AU Arithematic Unit
AU Astronomical Unit (93,000,000 miles) [Space]
AUDIX AUDio Information eXchange
AUI Attachment Unit Interface
AUP Acceptable Use Policy
AUP Acceptable Use Policy
AURA Association of Universities for Research in Astronomy
AUS Army of the United States
AUTODIN AUTOmatic DIgital Network
AUTOSEVCOM AUTOmatic SEcure Voice COMmunications
AUTOVON AUTOmatic VOice Network
AUX Apple UniX
AUXF AUXillary Frame
AV AudioVisual
AVD Alternate Voice Data
AVLIS Atomic Vapor Laser Isotope Separation
AVS Application Visualization Software
AWACS Airborne Warnings And Control Systems
AWEA American Wind Energy Association
AWG American Wire Gauge
AWGTHTGTTA Are We Going To Have To Go Through This Again
AWHFY Are We Having Fun Yet
AWK al Aho, peter Weinberger, brian Kernighan (pattern scanning language)
AWOL Absent WithOut Leave (also Absent Without Official Leave) (see AOL)
AWST Aviation Week and Space Technology (a.k.a. AvLeak), "AW&ST"
AXAF Advanced X-ray Astrophysics Facility [Space]
AY Arther Young
AZ Arizona
B4 Before
B4N Bye For Now
B6ZS Bipolar with 6 Zero Subsitution
B911 Basic 911
BA Bachelor of Arts
BAC By Any Chance
BACH Business Alliance for Commerce in Hemp
BAFO Best And Final Offer
BAG(L) Busting A Gut (Laughing)
BALUN BALanced to UNbalanced
BAMAF BELLCORE AMA Format
BANCS Bell Administrative Network Communications System
BAPCO Bellsouth Advertising & Publishing COmpany
BARRNET Bay Area Regional Research Network, "BARRNet" (SF Bay Area)
BASH Bourne-Again SHell
BASIC Beginner's All-purpose Symbolic Instruction Code
BATSE Burst And Transient Source Experiment (on GRO)
BBA Bachelor of Business Administration
BB Bases on Balls
BBB Better Business Bureau
BB Best of Breed
BB Bunnies and Burrows
BBC British Broadcasting Corporation
B bit, "b"
BBIAB Be Back In A Bit
BBL Barrel
BBL [I'll] Be Back Later
BBM Big Beautiful Man
BBN Bolt, Beranek, and Newman [Corporate name]
B Book
BBS Be Back Soon
BBS Bulletin Board Service/System
BBW Big Beautiful Woman
BBXRT Broad-Band X-Ray Telescope (ASTRO package)
B Byte
BC Battlecars
BC Before Christ
BC British Columbia
BCBS Blue Cross/Blue Shield, "BC/BS"
BCC Blind/Blank Carbon Copy
BCC Block Check Character
BCC Blocked Call Cleared
BCD Bad Conduct Discharge
BCD Binary Coded Decimal
BCD Blocked Call Delayed
BCDIC Binary Coded Decimal Interchange Code
BCE Before the Common Era (substitute for BC)
BCNU Be Seeing You
BCP Binary Communications Protocol
BCP Byte Controlled Protocols
BCPL Basic Combined Programming Language
BCR Bell Communications Research
BCS Bachelor of Commercial Science
BCS Basic Combined Subset
BCS Batch Change Supplement
BCS Binary Compatibility Standard (ABI for Motorola chips)
BCS Boston Computer Society
BCS British Computer Society
BCWP Budgeted Cost of Work Performed
BCWS Budgeted Cost of Work Scheduled
BDA Battle Damage Assessment
BDA Bomb Damage Assessment
BD Bachelor of Divinity
BD Bank Draft
BD Bills Discounted
B&D Bondage and Discipline
BDC Boston Development Center
BDD Basic Dungeons & Dragons, "BD&D"
BDF Binary Distribution Format
BDF Bitmap Description Format (Adobe)
BDF Bitmap Distribution Format
BDSM Bondage & Discipline, Dominance & Submission, Sado-Masochism.
BDSMLMNOP BDSM and whatever else we might do
BDT Billing Data Transmitter
BDT Bulk Data Transfer
BEA Bureau of Economic Analysis
BEAV Binary Editor And Viewer
BE Back End
BE Bill of Exchange
BECAUSE BEnchmark of Concurrent Architectures for their Use in Scientific Engineering
BED Hanscom Field, Bedford MA
BEF Band Elimination Filter
BEF British Expeditionary Force (see AEF)
BELLCORE BELL COmmunications REsearch
BEM Bug Eyed Monster
BENELUX BElgium, NEtherlands, and LUXembourg
BER Basic Encoding Rules
BER Bit Error Rate
BERNET BErliner RechnerNETz
BERT Bit Error Rate Test
BEST Borland Enhanced Support and Training
BETRS Basic Exchange Telecommunications Radio Service
BFA Bachelor of Fine Arts
BF Boy Friend
BF Brought Forward
BFD Big F***ing Deal
BFHD Big Fat Hairy Deal
BFN Bye For Now
BFR Biennial Flight Review
BGP Border Gateway Protocol
BHA Butylated HydroxyAnisole
BH Black Hole
BH Boot Hill
BHC Busy Hour Calls
BHP Brake HorsePower
BHT Butylated HydroxyToluene
BIAB Back In A Bit
BIAF Back In A Few
BIAS Back In A Second
BIAW Back In A While
BI Backplane Interconnect
BI Bus Interconnect
BICS Building Industry Consulting Services [telephony]
BID Bis In Die (twice a day)
BIMA Berkeley Illinois Maryland Array
BIND Berkeley Internet Name Daemon
BIOC Break Into Other Computers
BION Believe It Or Not
BIOS Basic Input Output System
BIRD BIlinear Rotation Decoupling
BIS Business Information System
BISDN Broadband Integrated Services Digital Network, "B-ISDN"
BISP Business Information System Program
BISYNC Binary Synchronous Communications, "BiSync" (BSC is preferred) [IBM]
BIT Binary digIT
BIT Bipolar Integrated Technology Inc
BITNET Because-It's-Time NETwork
BITS Biotechnology Information Toolkit Software
BIU Bus Interface Unit
BIX Byte Information eXchange
BLAS Basic Linear Algebra Subroutines
BLAST BLocked ASynchronous Transmission
BL Bill of Loading
BLDS Busy Line/Don't Answer, "BL/DS"
BLER Block Error Rate
BLERT BLock Error Rate Test
BLF Busy Lamp Field [telephony]
BLF Busy Line Field
BLM Bureau of Land Management
BLOBS Binary Large OBjectS
BLS Bureau of Labor Statistics
BLS Business Listing Service
BLT Bacon, Lettuce, and Tomato
BLT BLock Transfer
BLV Busy Line Verification
BMA Bank Marketing Association
BM Basal Metabolism
BM Bowel Movement
BM Breakdown Maintenance
BMEWS Ballistic Missile Early Warning
BMG Bloomington, IN
BMI Broadcast Music Inc.
BMO Ballistic Missile Office
BMOC Big Man On Campus
BMP Benchmark Plan
BMR Basal Metabolism Rate
BNC Bayonet Navy Connector
BNC Bayonet Neill Concelman (connector) [electronics] (see also TNC)
BNC Berkley Nucleonics Corporation
BNC British Naval Connectors
BNET Berkeley NETworking
BNF Bachus-Naur Form
BNFL British Nuclear Fuels Ltd
BNRCVUUCP Batch News ReCeive Via UUCP
BNS Billed Number Screening
BNSC British National Space Centre
BNU Basic Networking Utilities (AT&T's name for HoneyDanBer UUCP)
BO Body Odor
BO Branch Office
BO Buyer's Option
BOC Bell Operating Company
BOD Board Of Directors
BOF Birds Of a Feather
BOFH Bastard Operator From Hell
BOM Bill Of Materials
BOQ Bachelor Officers' Quarters
BOR Basic Output Report
BORSCHT Battery, Overvoltage, Ringing, Supervision, Coding, Hybrid Test
BOS Base Operating System
BOS Boston MA
BOS Business Office Supervisor
BOSIX Biin Open System Interface eXtension
BOSS Billing and Order Support System
BOT Beginning Of Tape
BP Base Pointer
BP Blood Pressure
BP British Petroleum
BP British Pharmacopoeia
BPD Borderline Personality Disorder
BPI Bits Per Inch, Blocks Per Inch, Bytes Per Inch
BPOC Bell Point Of Contact
BPOE Benevolent and Protective Order of Elks
BPPS Basing-Point Pricing System
BPS Bits/Bytes Per Second
BPSS Basic Packet-Switching Service
BRAT Business Residence Account Tracking system
BRB [I'll] Be Right Back
BR Bills Receivable
BR British Rail
BRC Business Reply Card
BRCS Business Residence Custom Service
BRI Basic Rate Interface
BRIEF Basic Reconfigurable Interactive Editing Facility
BRL army Ballistic Research Laboratory
BRL Ballistics Research Lab
BRM Basic Remote Module
BRS Bibliographic Retrieval Service
BRT Be Right There
BSA Basic Serving Arrangements
BSA Birmingham Small Arms
BSA Boy Scouts of America
BS Bachelor of Science
BS Back Space
BS Banded Signaling
BSBH Busy Season Busy Hour
BS Bill of Sale
BS Bill of Sale, "B/S"
BS British Standards
BSC Bachelor of SCience, "BSc"
BSC Binary Synchronous Communication
BSC Binary Synchronous Communications (also sometimes BiSync) [IBM]
BSC Business Service Center
BSCM BiSynchronous Communications Module
BSD Berkeley Software Distribution
BSE Basic Service Element
BSF Bell Shock Force
BSI British Standards Institute
BSMTP Batched SMTP
BSN Bachelor of Science in Nursing
BSOC Bell Systems Operating Company
BSP Bell System Practice
BSRFS Bell System Reference Frequency Standard
BSS Basic Synchronized Subset
BSS Block Started by Symbol (IBM assembly-language)
BST Basic Services Terminal
BSTJ Bell System Technical Journal
BSTS Better Safe than sorry
BSW Boston Software Works
BTA But Then Again
BTAM Basic Telecommunications Access Method [IBM]
BT BitTorrent
BT Bus Terminator
BTDT Been There, Done That
BTHU British Thermal Unit, "BThU" (BTU, q.v., is preferred)
BTL Backplane Transceiver Logic
BTL Bell Telephone Laboratories
BTN Billing Telephone Number
BTO Bachman Turner Overdrive
BTOL Better Than Open Look
BTS Board Tracking System
BTSOOM Beats The Shit Out Of Me
BTTH butt to the head
BTU British Thermal Unit
BTW By The Way
BU Bushido
BU Business Units
BURP Brewers United for Real Potables
BUS Basic Utility System
BUT Board Under Test
BVA Billing Validation Application
BV Blessed Virgin
BVC Billing Validation Center
BVY Beverly MA
BW Business Wire
BWC BandWidth Compression
BWG Big Wide Grin
BWI Baltimore-Washington International (airport)
BWI British West Indies
BWM Broadcast Warning Message
BWT Broadcast Warning TWX
BWTS BandWidth Test Set
BX Base eXchange (see also PX)
BYKT(A) But You Knew That (Already)
BYU Brigham Young University
CAA Civil Aviation Authority (U.K.)
CAB Civil Aeronautics Board
CABS Carrier Access Billing System
CA CAble
CA California
CAC Calling-card Authorization Center
CAC Carrier Access Code
CAC Circuit Administration Center
CAC Customer Administration Center
CA Chartered Accountant
CA Chief Accountant
CA Chronological Age
CACM Communications of the Association for Computing Machinery
CA Collision Avoidance (as in CSMA/CA (q.v.))
CAD Computer Aided Design (sometimes seen as CAD/CAM)
CAD Computer-Aided Dispatch
CADD Computer-Aided Design and Drafting
CADV Combined Alternate Data/Voice
CAE Common Application Environment
CAE Computer-Aided Education
CAE Computer-Aided Engineering
CAFE Corporate Average Fuel Economy
CAGR Compound Annual Growth Rate
CAI Call Assembly Index
CAI Computer Aided Instruction
CAI Computer Application Inc
CAI Computer Assisted Instruction
CAIS Colocated Automatic Intercept System
CAIS Common Apse Interface Specification
CALRS Centralized Automatic Loop Reporting System
CALS Computer-aided Acquisition and Logistics Support
CAMAC Computer Automated Measurement And Control
CAMA Centralized Automatic Message Accounting
CAM Common Access Method (SCSI)
CAM Computer Aided Management
CAM Computer-Aided Manufacturing
CAM Computer Aided Manufacturing (sometimes seen as CAD/CAM)
CAM Content Addressable Memory
CAML Categorical Abstract Machine Language
CAMM Computer Assisted Material Management
CAMP Campaign Against Marijuana Planting
CAMRA CAMpaign for Real Ale
CAN Campus Area Network
CAP Civil Air Patrol
CAP Columbia Appletalk Package
CAP Computer Aided Publishing
CAPP Computer Aided Process Planning
CAPS CAPital letterS
CAPTAIN Character And Pattern Telephone Access Information Network
CAR Computer Access & Retrieval
CAR Contents of the Address part of the Register
CAROT Centralized Automatic Reporting On Trunks
CART Championship Auto Racing Teams
CAS Chemical Abstracts Service
CAS Circuit Associated Signaling
CAS Communicating Application Specification
CAS Computerized Autodial System
CASE Common Application Service Element
CASE Computer Aided Software Engineering
CASSI Chemical Abstracts Service Source Index
CASSIS Classification and Search Support Information System
CAT Computer-Aided Tomography
CAT Computer Assisted Typesetter
CAT conCATenate
CAT Craft Access Terminal
CAT Customer Acceptance Test
CATIS Common Applications and Tools Integration Services
CATLAS Centralized Automatic Trouble Locating and Analysis System
CATV Community Antenna TeleVision
CAU Connection Arrangement Unit
CAV Constant Angular Velocity
CAVU Ceiling And Visibility Unlimited
CB(C&B) Chastity Belt / Cock and Ball
CBC Canadian Broadcasting Corporation
CB Citizens Band radio
CBD Cash Before Delivery
CBD Central Business District
CBD Commerce Business Daily
CBDS Connectionless Broadband Data Service
CBEMA Computer & Business Equipment Manufacturers Association
CBI Computer Based Instruction
CBR Chemical, Biological, Radiological warfare
CBS Columbia Broadcasting System
CBS CrossBar Switching
CBT Cock and Ball Torture/Training
CBW Chemical and Biological Warfare
CBX Computerized Branch eXchange
CCA Computer Corporation of America [Corporate name]
CCAFS Cape Canaveral Air Force Station
CC Carbon Copy
CCC Canadian Committee on Cataloging
CCC Central Control Complex
CCC Ceramic Chip Carriers
CCC Civil(ian) Conservation Corps
CCCCM CCC CounterMeasures (sometimes C^3CM)
CCC Command, Control, and Communications (sometimes C^3)
CC C Compiler
CCC Computer Control Center
CCC Concourse Computer Center [MIT]
CCC Customer Call Center
CC Center Conductor
CC Central Control
CCCI Command, Control, Communications, and Intelligence
CC Cluster Controller
CC Common Control
CC Cost Center
CC Country Code
CCD Charge Coupled Device (see CID)
CCD Computer-Controlled Display
CCDS Centers for the Commercial Development of Space
CCH Connections per Circuit per Hour
CCI Computer Carrier Interrupt
CCI Computer Consoles, Incorporated
CCIM Certified Commercial Investment Member
CCIP Continuously Computed Impact Point
CCIR Comite' Consultatif International des Radio Communications
CCIS Common Channel Interoffice Signaling [telephony]
CCITT Comite' Consultatif International Telegraphique et Telephonique
CCITT International Consultative Committee for Telegraphy and Telephony
CCL Console Command Language
CCNC Common Channel Network Controller
CCNC Computer/Communications Network Center
C Copper
CCR Commitment, Concurrency, and Recovery
CCR Covenants, Conditions, and Restrictions
CCR Creedence Clearwater Revival
CCR Customer-Controlled Reconfiguration
CCRP Continuously Computed Release Point
CCSA Common Control Switching Arrangement [telephony]
CCS Common Channel Signaling
CCS Common Command Set (SCSI)
CCS Hundred (C) Call Seconds
CCTAC Computer Communications Trouble Analysis Center
CCTA Central Computer and Telecommunications Agency
CCT Central Control Terminal
CCTV Closed Circuit TeleVision
CCU COLT Computer Unit
CCV Calling Card Validation
CCW Counter ClockWise
CDA Call Data Accumulator
CDA Coin Detection and Announcement
CDA Compound Documents Architecture
CDAR Customer Dialed Account Recording
CDB Command Descriptor Block
CDB Customer Distributed Buglist
CD Carrier Detect (properly DCD (q.v.))
CDC Centers for Disease Control
CDC Control Data Corporation, inc. [Corporate name]
CD Certificate of Deposit
CDCF Cumulative Discounted Cash Flow
CD Circular Dichroism
CD Civil Defense
CD Collision Detection (as in CSMA/CD (q.v.))
CD Compact Disk
CD Cross Dresser
CDEV Control panel DEVice
CDF Combined Distributing Frame
CDF Context-Dependent File
CDIAC Carbon Dioxide Information Analysis Center
CDI Circle Digit Identification
CDI Course Deviation Indicator
CDO Community Dial Office
CDP Career Development Program
CDPR Customer Dial Pulse Receiver
CDR Call Dial Rerouting
CDR CommanDeR
CDR Contents of the Decrement part of the Register
CDR Critical Design Review
CDROM Compact Disk Read Only Memory, "CD-ROM"
CDS Craft Dispatch System
CDSF Commercially Developed Space Facility
CDT Call Data Transmitter
CDT Central Daylight Time
CDU Control Display Unit
CEA Commissariat a l'Energie Atomique, France
CEA Council of Economic Advisors
CEA County Education Authority
CEBIT welt-CEntrum Buero Information Telekommunikation
CEC Commission of the European Communities
CE Chemical Engineer
CE Civil Engineer
CE Common Era (substitute for AD)
CE Corps of Engineers
CE Customer Engineer
CED Committee for Economic Development
CEERT Coalition for Energy Efficiency and Renewable Technologies
CEF Cable Entrance Facility
CEI Comparably Efficient Interconnection
CELSS Controlled Ecological Life Support System [Space]
CEN Centre d'Etudes Nucleaires
CENS Centre d'Etudes Nucleaires de Seclay
CENTO CENtral Treaty Organization
CEO Chief Executive Officer
CERMET Ceramic Metal Element
CERN organisation (formerly Conseil) Europeenne pour la Recherche Nucleaire
CERT Computer Emergency Response Team
CET Central European Time
CEV Controlled Environment Vault
CEVI Common Equipment Voltage Indicator
CFA Center For Astrophysics
CFB Color Frame Buffer
CFCA Communications Fraud Control Association
CF Carry Forward
CFC Chloro-FluoroCarbon [chemical]
CFC Combined Federal Campaign
CF Coin First payphone [telephony]
CFD Computational Fluid Dynamics
CFF Columbus Free Flyer
CFHT Canada-France-Hawaii Telescope
CFI Certificated Flight Instructor
CFI Cost, Freight, and Insurance
CFIDS Chronic Fatigue Immune Deficiency Syndrome
CFL Canadian Football League
CFO Chief Financial Officer
CFP Call For Papers
CFR Code of Federal Regulations
CFS Chronic Fatigue Syndrome
CGA Color Graphics Adapter
CG Coast Guard
CG Commanding General
CGCT Compagnie Generale de Constructions Telephoniques
CGE Cincinnati Gas & Electric, "CG&E"
CGE Compagnie Generale d'Electricite
CGIAR Consultative Group on International Agricultural Research
CGI Computer Graphics Interface
CGM Computer Graphics Metafile
CGMIF Computer Graphics Metafile Interchange Format
CGN Concentrator Group Number
CGS Centimeter-Gram-Second
CGX Chicago (Meigs) IL
CHA Champions
CHAP CHAnnel Processor
CHARA Center for High Angular Resolution Astronomy
CHARGEN CHARacter GENerator
CH Cardboard Heroes
CH ClearingHouse
CH CourtHouse
CH Customs House
CHI Chill: Adventures into the Unknown
CHOTS Corporate Headquarters Office Technology System
CHP California Highway Patrol
CHUDWAH Clueless Het Dom Wannabe
CHUSWAH Clueless Het Sub Wannabe
CIAC Computer Incident Advisory Capability
CIA Central Intelligence Agency [US Government]
CIB Console Interface Board
CICA Competition in Contracting Act
CIC Carrier Identification Code
CIC Coordination and Information Center [CSNet]
CI Configuration Interaction
CICS Customer Information Control System [IBM]
CICSVS Customer Information Control System / Virtual Storage, "CICS/VS"
CI Cubic Inches
CID Central Institute for the Deaf
CID Charge Injection Device (see CCD)
CID Computer Integrated Design
CIDEP Chemically Induced Dynamic Electron Polarization
CIDIN Common Icao Data Interchange Network
CIDNP Chemically Induced Dynamic Nuclear Polarization
CIF Caltech Intermediate Form
CIF Cost, Insurance and Freight
CII Call Identity Index
CIMA Construction Industry Manufacture's Association
CIM Computer Integrated Manufacturing
CIO Chief Information Officer
CIP Chief Income Producer
CIP Computer-Investitions-Programm
CIRCA Center for Instructional and Research Computing Activities
CIRRIS Cryogenic InfraRed Radiance Instrument for Shuttle
CISC Complex Instruction Set Computer
CIS Chief Income Spender
CIS Commonwealth of Independent States
CIS Complete and Irrevocable Submission
CIS Compuserve Information S?
CIS Customized Intercept Service
CIT California Institute of Technology
CIT Case Institute of Technology (part of CWRU, Cleveland, OH)
CIT Circumstellar Imaging Telescope [Space]
CIT Computer Integrated Telephony
CIU Computer Interface Unit
CLASP Comprehensive Logistics Automated Support Program
CLASS Centralized Local Area Selective Signaling
CLASS Custom Local Area Signaling Service
CL Connection-Less mode
CLDN Calling Line Directory Number
CLEF Certified Licensed Evaluation Facility
CLEI Common-Language Equipment Identification
CLI Calling Line Ident
CLI Command Line Interpreter
CLID Calling Line IDentification
CLLI Common-Language Location Identification
CLNP ConnectionLess Network Protocol
CLOS Common Lisp Object System
CLRC Circuit Layout Record Card
CLR Combined Line and Recording
CLS ConnectionLess Server
CLTP ConnectionLess Transport Protocol
CLU Chartered Life Underwriter
CLUT Color LookUp Table
CLV Constant Linear Velocity
CMA Cash Management Account
CMAC Centralized Maintenance and Administration Center
CMCC Central Mission Control Centre (ESA)
CMC Communication Machinery Corporation
CMC Construction Maintenance Center
CMC Corporate Management Commitee
CM Command Module (Apollo spacecraft)
CM Computer Modern
CM Congregation of the Mission
CM Corrective Maintenance
CMD Centralized Message Distribution
CMDF Combined Main Distributing Frame
CMDS Centralized Message Data System
CMH Port Columbus OH
CMI Champaign-Urbana IL
CMIIW Correct Me If I'm Wrong
CMIP Common Management Information Protocol
CMIS Common Management Information Service
CMISE Common Management Information Service Element
CML Current Model Logic
CMMU Cache/Memory Management Unit
CMOS Complementary-symmetry Metal-Oxide Semiconductor
CMOT Common Management Information Services and Protocol over TCP/IP
CMRR Common Mode Rejection Ratio
CMS Call Management System
CMS Circuit Maintenance System
CMS Communications Management Subsystem
CMS Content Management System
CMS Conversational Monitoring System
CMSGT Chief Master Sergeant, "CMSgt"
CMT Cellular Mobile Telephone
CMU Carnegie-Mellon University
CMU COLT Measurement Unit
CMW Compartmented Mode Workstation
CMYK Cyan, Magenta, Yellow, blacK
CNAB Customer Name/Address Bureau
CNA Communications Network Application
CNA Customer Name / Address, "CN/A" [telephony]
CNA Customer Name and Address
CN Canadian National (railroad) [Corporate name]
CNCC Customer Network Control Center
CNC Computer Numerical Control
CNC Consensual Non Consent
CN Change Notice
CNDO Complete Neglect of Differential Overlap
CNES Centre National d'Etude Spatiales
CNI Common Network Interface
CNMA Communications Network for Manufacturing Applications
CNM Communications Network Management
CNMS Cylink Network Management System
CNN Cable News Network
CNO Carbon-Nitrogen-Oxygen
CNO Chief of Naval Operations
CNP continued [in my] next post
CNR Canadian National Railways
CNR Carrier to Noise Ratio
CNR Consiglio Nazionale delle Ricerche, Italy
CNRCVUUCP Compressed News ReCeive Via UUCP
CNS Central Nervous System
CNS Complimentary Network Service
CNSR Comet Nucleus Sample Return
COAM Customer Owned And Maintained
COB Close Of Business
COBE COsmic Background Explorer
COBOL COmmon Business Oriented Language
CO Cash Order
COC Call of Cthulhu
COC Circuit Order Control
CO Central Office [telephony]
CO Colorado
COCOM Coordinating Comittee for Export to Comminist Area
CO Commanding Officer
CO Conscientious Objector
COCOT Customer-Owned Coin-Operated Telephone [telephony]
CODASYL Conference On DAta SYstems Languages
CODCF Central Office Data Connecting Facility
COD Collect On Delivery; Cash On Delivery
CODEC COder-DECoder
COE Center Of Excellence
COE Central Office Equipment
COEES COE Engineering System
COER Central Office Equipment Report
COFF Common Object File Format
CO in Care Of, "C/O"
COLA Cost-Of-Living Allowance
COLOC COrrelation spectroscopy for LOng-range Couplings
COLT Central Office Line Tester
COMAS Central Office Maintenance and Administration System
COM Commercial (pilot certificate)
COM Computer Output Microfilm
COMDEX COMputer Dealer's Exposition
COMM Communications
COMPACT COMmercial Product ACquisition Team
COMPTEL COMPton TELescope (on GRO)
COMSAT Communications Satellite Corp
COMSAT COMmunications SATellite [Space]
COMS Complementary Metal Oxide Semiconductor
CONN CONNector
CONS Connection-Oriented Networking Session
CONTAC Central Office NeTwork ACcess
CONUS CONtinental United States
COO Chief Operating Officer
COP Character-Oriented Protocol
COPS Computer Oracle and Password System
COQ Cost Of Quality
CORE COntrolled Requirement Expression
CORN COmputer Resource Nucleus
CORNET CORperate NETwork
COS Central Office Switch
COS Corporation for Open Systems
COSINE Cooperation for Open Systems Interconnection Networking in Europe
COSMIC COmmon Systems Main InterConnection frame system
COSMIC COmputer Software Management and Information Center
COSMOS COmputer System for Mainframe OperationS
COSTAR Corrective Optics Space Telescope Axial Replacement
COSY COrrelation SpectroscopY
COT Central Office Terminal
COTS Connection-Oriented Transport (layer) Service
CPA Certified Public Accountant
CPA Communications & Public Affairs, "C&PA"
CP Canadian Pacific
CP Canadian Press
CPC Cellular Phone Company
CPC Circuit Provisioning Center
CP Chemically Pure
CP Command Post
CP Command Processor
CP Control Program
CP CoPy
CP Corporal Punishment
CP Cross Polarization
CPD Central Pulse Distributor
CPE Customer Premises Equipment
CPE Customer-Provided Equipment
CPFF Cost Plus Fixed Fee
CPH Cost Per Hour
CPI Characters Per Inch
CPI Common Programming Interface
CPI Computer Private branch exchange Interface
CPIO CoPy In/Out
CPL Combined Programming Language
CPMAS Cross Polarization/Magic Angle Spinning, "CP/MAS"
CPM Control Program for Microcomputers (sometimes CP/M)
CPM Cost Per Minute
CPM Critical Path Method
CPMG Carr-Purcell-Meiboom-Gill
CPMP Carrier Performance Measurement Plan
CPO Chief Petty Officer
CPO Chief Post Office
CPO Customer Premises Equipment
CPP Cable Patch Panel
CPR Canadian Pacific Railway
C programming language, successor to BCPL
CPS Characters Per Second
CPSR Computer Professionals for Social Responsibility
CPT CaPTain
CPU Central Processing Unit
CPW Certified Public Weigher
CQ Charge of Quarters, Call to Quarter
CQ Commercial Quality
CRAF Comet Rendezvous/Asteroid Flyby [Space]
CRAM Card Random Access Memory
CRAS Cable Repair Administrative System
CRB Certified Residential Broker
CR Carriage Return (ASCII 15 octal)
CRC Camera Ready Copy
CRC Chemical Rubber Company
CRC Civil Rights Commission
CRC Customer Record Center
CRC Cyclical Redundancy Character
CRC Cyclic Redundancy Check
CRD Customer Required Date
CREG Concentrated Range Extension with Gain
CREN Corporation for Research and Educational Networking
CRFC Customer Return For Credit
CRFMP Cable Repair Force Management Plan
CRI Cray Research, Inc.
CRIN Centre de Recherche en Informatique de Nancy
CRISC Complex-Reduced Instruction Set Computer
CRIS Customer Record Information System
CRISP Complex-Reduced Instruction Set Processor
CRISP Cross-Relaxation Intensity Sequence Pattern
CRL Certificate Revocation List
CRLF Carriage Return/Line Feed
CRONIC Colorado Rudimentary Operating Nucleus for Intelligent Controllers (HSC OS)
CROTCH Computerized Routine for Observing and Testing the Channel Hardware
CRRES Combined Release / Radiation Effects Satellite
CRSAB Centralized Repair Service Answering Bureau
CRS Centralized Results System
CRT Cathode Ray Tube (also generic reference to a terminal)
CRTC Canadian Radio-television and Telecommunications Commission
CSAB Computing Sciences Accreditation Board
CSA Canadian Standards Association
CSA Carrier Serving Area
CSACC Customer Service Administration Control Center
CSA Client Service Agent
CSA Confederate States of America
CSACS Centralized Status, Alarm and Control System
CSA Customer Service Administration
CSAR Centralized System for Analysis Reporting
CSC Cell Site Controller
CSC Computer Sciences Corporation
CS Chivalry & Sorcery, "C&S"
CS Civil Servant
CSCM Chemical Shift Correlation Map
CS Code Segment
CS Computer Science; Computing Science
CS County Seat
CS Customer Service
CSDC Circuit Switched Digital Capability
CSD Customer Service Division
CSE Common Subexpression Elimination
CSF Critical Success Factor
CSI Commercial Systems Integration
CSIRO Commonwealth Scientific and Industrial Research Organization
CSIS Canadian Security and Intelligence Service
CSL Can't Stop Laughing
CSL Coin Supervising Link
CSMACA Carrier Sense Multiple Access with Collision Avoidance, "CSMA/CA"
CSMA Carrier Sense Multiple Access
CSMACD Carrier Sense Multiple Access with Collision Detection, "CSMA/CD"
CSM Command and Service Module (Apollo spacecraft)
CSM Command Sergeant Major
CSN Computer Systems News (magazine)
CSNET Computer Science NETwork
CSOC Consolidated Space Operations Center (at Colorado Springs)
CSO Central Services Organization
CSO Computing Services Office (UIUC)
CSPAN Cable-Satellite Public Affairs Network, "C-SPAN"
CSP Control Switching Point
CSR Control and Status Register
CSRG Computer Systems Research Group
CSRI Computer Systems Research Institute (U Toronto)
CSRS Civil Service Retirement System
CSS Computer Sub-System
CSS Customer Switching System
CSTA Computer Supported Telecommunications Applications
CSTC Consolidated Satellite Test Center (USAF)
CST Central Standard Time
CSU Channel Service Unit
CTC Canadian Transport Commission
CTC Centralized Traffic Control [railroad]
CTC Central Test Center
CTC Chu-Itoh Techno-Science Co.
CT Central Time
CT Charge Transfer
CT Communications & Tracking, "C&T"
CT Computed Tomography
CT Connecticut
CTD Computing and Telecommunications Division
CTERM Command TERMinal (DECNET)
CTIO Cerro Tololo Inter-american Observatory
CTM Contac Trunk Module
CTMS Carrier Transmission Measuring System
CTNE Compania Telefonica Nacional de Espana
CTO Call Transfer Outside
CTRL Control
CTS Carpal Tunnel Syndrome
CTS Carpal Tunnel Syndrome
CTS Cartridge Tape Subsystem (Exabyte)
CTS Clear To Send
CTS Compatible Timesharing System
CTSS {Compatible,Chameleon,Cray,Cyber} Time-Sharing System
CTT Cartridge Tape Transport
CTTC Cartridge Tape Transport Controller
CTTN Cable Trunk Ticket Number
CTV Canadian TeleVision network
CUA Common User Access
CU Close-Up
CU Control Unit
CUCRIT Capital Utilization CRITeria
CU Customer Unit
CU (L8R) (S) See You (Later) (Soon)
CUL See You Later [net jargon]
CUNBATCH Compressed news UNBATCH
CUTK Common Update/EQuipment system, "CU/TK"
CVCC Controlled Vortex Combustion Chamber
CV Constant Velocity
CV Curriculum Vitae
CVD Chemical Vapor Deposition
CVR Compass Voice Response
CVT Continuous Variable Transmission
CW Car Wars
CWC City-Wide Centrex
CW Chemical Warfare
CW Child Welfare
CW Churchwarden
CW Continuous Wave
CWI Centrum voor Wiskunde en Informatica (Centre for Mathematics and Computer Science)
CWO Cash With Order
CWO Chief Warrant Officer
CWOT Complete Waste Of Time
CWRU Case Western Reserve University
CWYS Converse With You Soon
CXI Common X-windows Interface
CYA Cover Your Ass
CY Calendar Year
CYO Catholic Youth Organization
CZ Canal Zone
CZ Control Zone
DACCS Digital Access Cross Connect System [telephony]
DAC Design Automation Conference
DAC Digital to Analog Converter
DACS Digital Access Cross-connect System [telephony]
DACS Directory Assistance Charging System
DA Days after Acceptance
DAD Draft ADdendum
DA Department of Agriculture
DA Deposit Account
DA Desk Accessory (Mac)
DA Digital to Analog converter, "D?A"
DA Directory Assistance (/C = computerized, /M = Microfilm)
DA District Attorney
DA Don't Answer
DAIS Distributed Automatic Intercept System
DAMQAM Dynamically Adaptive Multicarrier Quadrature Amplitude Modulation
DAP Data Access Protocol (DECNET)
DAP Division Advisory Panel [of NSF (q.v.) DNCRI (q.v.)]
DARC Division Alarm Recording Center
DAR Daughters of the American Revolution
DARFC Duck And Run For Cover
DARPA Defense Advanced Research Projects Agency
DARU Distributed automatic intercept system Audio Response Unit
DASD Direct Access Storage Device
DAS Directory Assistance System
DAS Distributor And Scanner
DAS Dual Attach Station
DASWDT Distributor And Scanner-Watch Dog Timer, "DAS-WDT"
DATA Defense Air Transport Administration
DAT Digital Audio Tape
DAV Data Above Voice
DAV Disabled American Veterans
DAY Dayton OH
DBAC Data Base Administration Center
DBA Data Base Administrator
DBA Doing Business As
DBAS Data Base Administration System
DB DataBase
DB DeciBels, "db"
DB Dial Box
DBF DBase Format
DBM DataBase Manager
DBME DataBase Managment Environment
DBMS DataBase Management System (rdbms for Relational)
DBRAD Data Base Relational Application Directory
DBS Duplex Bus Selector
DBT Dialectical Behavior Therapy
DCA Defense Communications Agency
DCA Distributed Communication Architecture
DCA Document Content Architecture
DCA Washington (National) DC
DCC Data Country Code
DCC Descriptive Cataloging Committee
DCC DiCyclohexylCarbodiimide
DCC Digital Compact Cassette
DCCO Defense Commercial Communications Office
DCCS DisContiguous Shared Segments
DC Data Cartridge
DCD Data Carrier Detect (sometimes CD (q.v.))
DC Direct Current, "dc" (see also AC)
DC District of Columbia
DCE Data Circuit-terminating Equipment
DCE Data Communications Equipment
DCE Distributed Computing Environment
DCH D Channel Handler
DCI Desktop Color Imaging
DCL Data Control Language
DCL DEC Control Language
DCL Digital Command Language
DCLU Digital Carrier Line Uint
DCM Digital Carrier Module
DCMS Distributed Call Measurement System
DCMU Digital Concentrator Measurement Unit
DCNA Data Communication Network Architecture
DCO Document Change Order
DCP Distributed Communications Processor
DCP Duplex Central Processor
DCPR Detailed Contuing Property Record (PICS/DCPR)
DCPSK Differential Coherent Phase-Shift Keying
DCS Digital Crosconnect System
DCS Distribution Control System
DCT Digital Carrier Trunk
DCTN Defense Commercial Telecommunications Network
DCTS Dimension Custom Telephone Service
DDA Digital Differential Analyzer
DDA Domain Defined Attribute
DDB Device Dependent Bitmap
DDC Digital Data Converter
DDC Direct Department Calling
DDCMP Digital Data Communication Message Protocol
DDCU DC-to-DC Converter Unit
DD Daredevils
DD Data Dictionary
DD Days after Date
DDD Direct Distance Dialing [Telephony; principally US, elsewhere STD]
DD Demand Draft
DD Dishonorable Discharge
DD Disk Drive
DD Doctor of Divinity
DD Double Density
DD Dungeons & Dragons, "D&D"
DDE Dynamic Data Exchange
D Depth
DDJ Dr. Dobbs Journal
DDK Driver Development Kit (from MS)
DDL Data Definition Language
DDL Document Description Language
DDN Defense Data Network
DDP Datagram Delivery Protocol
DDP Distributed Data Processing
DDPEX Device Dependent PEX
DDQ DichloroDicyanobenzoQuinone
DDS Dataphone Digital Service [AT&T]
DDS Dataphone Digital service carrier offering 2.4 - 56 kb/s
DDS Digital Dataphone Service
DDS Digital Data Service
DDS Digital Data Storage (Sony and HP's DAT format)
DDS Digital Data System
DDS Direct Digital Service
DDS Doctor of Dental Surgery; Doctor of Dental Science
DDS Document Distribution Services
DDT DichloroDiphenylTrichloroethane
DDV DatenDirektVerbindung
DDX Digital Data eXchange, Device Dependent X (windows)
DDX Distributed Data eXchange
DEA Data Encryption Algorithm
DEA Drug Enforcement Agency
DEAR Department of Energy Acquisition Regulation
DEBNA Digital Ethernet BI Network Adapter
DEC Digital Equipment Corporation [Corporate name]
DECNET Digital Equipment Corporation NETwork
DECUS Digital Equipment Computer Users Society
DE Delaware
DE Disk Enclosure
DELNI Digital Ethernet Local Network Interconnect
DELQA Digital Ethernet Lowpower Q-bus network Adapter
DELUA Digital Ethernet Lowpower Unibus network Adapter
DEMPR Digital Ethernet Multi-Port Repeater
DEPCA Digital Ethernet Personal Computer-bus Adapter
DEPT Distortionless Enhancement by Polarization Transfer
DEQNA Digital Ethernet Q-bus Network Adapter
DEREP Digital Ethernet REPeater
DERP Defective Equipment Replacement Program
DES Data Encryption Standard
DESPR Digital Ethernet Single Port Repeater
DESTA Digital Ethernet thin-wire STation Adapter
DEUNA Digital Ethernet Unibus Network Adapter
DEW Distant Early Warning (as in DEW Line)
DEXEC Diagnostic EXEc software
DFC Distinguished Flying Cross
DF Damage Free
DFD Data Flow Diagram
DF Direction Finding
DF Direction Finding, "D/F"
DFE Data Flow Editor
DFG Deutsche ForschungsGemeinschaft
DFI Digital Facility Interface
DFM Distinguished Flying Medal
DFMS Digital Facility Management System
DFN Deutsches ForschungsNetz
DFRF Dryden Flight Research Facility (now ADFRF)
DFS Depth-First Search
DFS Distributed File System
DFT Discrete Fourier Transform
DFTT Don't Feed The Trolls
DFW Dallas-Ft.Worth (regional airport)
DGA Direct Graphics Access
DG Data General [Corporate name]
DG Dei Gratia (by the grace of God)
DG Directional Gyro
DG Director General
DGP Dissimilar Gateway Protocol
DGSC Defense General Supply Center
DHCP Dynamic Host Configuration Protocol
DHHS Department of Health and Human Services
DHSS british Department of Health and Social Security
DHSS Department of Health and Social Security (British)
DIA Defence Intelligence Agency
DIA Display Industry Association
DIAD (magnetic) Drum Information Assembler / Dispatcher
DIA Document Interchange Architecture
DIAL Direct Information Access Line
DIAS Defense Automatic Integrated System
DIBAL DiIsoButylALuminum hydride
DIB Device Independent Bitmap
DIB Directory Information Bases
DIC Digital Interface Controller
DID Direct Inward Dialing [telephony]
DID Dissociative Identity Disorder (used to be MPD)
DIF Digital Interface Frame
DIF Document Interchange Format
DIFMOS Double Injection Floating Gate MOS
DIL Dual InLine
DILOG DIstributed LOGic
DIM Data In the Middle
DIMS Document Image Management System
DIN Deutsche Industrie Normenausschuss
DIN Deutsches Institut fur Normung
DINK Double Income, No Kids
DIP Dual Inline Package
DIR Deliverly & Installation Request
DIRE Dire Is Really Emacs
DIRT Design In Real-Time
DISA Direct Inward System Access
DISCO DIfferences and Sums within COsy
DIS Draft International Standard (ISO)
DISOSS DIStributed Office Support System
DIU Digital Interface Unit
DIV Division
DIX DEC, Intel, Xerox (Ethernet hardware levels)
DIY Do It Yourself
DJ Disc Jockey
DKF Dreaded Koosh Flogger
DLA Defense Logistics Agency
DLC Data Link Control
DLC Digital Loop Carrier
DLC Driver's License Compact (Uniform interstate treatment)
DLCU Digital Line Carrier Unit
DL Download
DLE Data Link Escape
DLG Digital Line Graph
DLI Data Link Interface
DLL Dial Long Lines
DLL Dynamic Link Library
DLO Dead Letter Office
DLS Data Link Control
DLS Digital Link Service
DLTDHYITAOYWO Dont Let The Door Hit You In The Ass On Your Way Out
DLTU Digital Line/Trunk Unit
DLUPG Digital Line Unit-Pair Gain, "DLU-PG"
DMA Direct Memory Access
DMD Directory Management Domain
DMD Doctor of Dental Medicine
DM Delta Modulation
DM Dialog Manager
DM District Manager
DM Dungeon Master
DME DiMethoxyEthane
DME Distance Measuring Equipment
DME Distributed Management Environment
DMF DiMethylFormamide
DMI Digital Multiplexed Interface
DML Data Manipulation Language
DML Data Manipulation Logic
DMOS Diffusion Metal Oxide Semiconductor (see MOS)
DMQ Do-Me Queen
DMS Data Management System
DMS Digital Multiplexed System
DMS Diskless Management Services
DMSP Defense Meteorological Satellite Program
DMU Data Manipulation Unit
DMV Department of Motor Vehicles
DMZ DeMilitarized Zone
DNA DeoxyriboNucleic Acid
DNA Digital Network Architecture [DEC]
DNC Direct Numerical Control
DNC Dynamic Network Controller
DNCRI [NSF (q.v.)] Division of Networking and Communications Research and Infrastructure
DN Directory Number
DND Do Not Disturb
DNDC Don't Know, Don't Care
DNHR Dynamic NonHierarchical Routing
DNIC Data Network Identification Code [telephony]
DNI DECnet Network Interface
DNL Director of Naval Laboratories
DNP Dynamic Nuclear Polarization
DNR Dialed Number Recorder [telephony]
DNS Domain Name System
DNX Dynamic Network X-connect
DOA Dead On Arrival
DOB Date Of Birth
DOC Dynamic Overload Control
DOCS Display Operator Console System
DOD Department of Defense, "DoD"
DOD Department Of Defense [U.S. Government]
DOE Department Of Energy [U.S. Government]
DOE Depends On Experience
DOHC Dual OverHead Camshaft
DOJ Department Of Justice [U.S. Government]
DOMAIN Distributed Operating Multi Access Interactive Network (Apollo)
DOM Data On Master group
DORE Dynamic Object Rendering Environment
DOS Disk Operating System
DOT Department Of Transportation [U.S. Government]
DOTE Director, Operational Test and Evaluation, "DOT&E"
DOTS Digital Office Timing Supply
DOV Data Over Voice [telephony]
DOW Day Of Week
DOXYL Dimethyl-OXazolidine-oxYL
DOYC Deity Of Your Choice
DOYKB Down On Your Knees, Bitch
DPAC Dedicated Plant Assignment Center
DPA Delegation of Procurement Authority
DPANS Draft Proposed American National Standard
DPC Destination Point Code
DP Data Processing
DP Demarcation Point
DP Dial Pulse [telephony]
DP Displaced Persons (expelled from native land)
DP Display Postscript
DP Double Play
DP Draft Proposal
DPE Data Path Extender
DPI Dots Per Inch
DPM Defect Per Million
DPM Digital Panel Meter
DPM Directional Policy Matrix
DPMI DOS Protected Mode Interface
DPNPH Data Packet Network-Packet Handler, "DPN-PH"
DPP Discounted Payback Period
DPPH DiPhenylPicrylHydrazyl
DPS Display PostScript
DPSK Differential Phased-Shift Keying
DQC Double-Quantum Coherence
DQ Dairy Queen
DQDB Distributed Queue Dual Bus a reservation-strategy MAN 150 Mb/s
DQ Dragon Quest
DQF Double-Quantum Filter
DQL Database Query Language
DQOTD Dumb Question Of The Day
DRAM Dynamic Random Access Memory (as opposed to static RAM)
DRAW Direct Read After Write
DRDA Distributed Relational Database Architecture
DR Data Ready
DR Data Receive
DRD Data Reading Device
DR Dead Reckoning
DR Dining Room
DRE Directional Reservation Equipment
DRG Democratic Republic of Germany (East Germany)
DRI Defense Research Internet (replaces Arpanet)
DRI Digital Research, Incorporated [Corporate name]
DRMU Digital Remote Measurement Unit
DRP DECnet Routing Protocol
DRS Data Rate Select (RS-232)
DSAB Distributed Systems Architecture Board
DSA Dial System Assistance
DSA Digital Storage Architecture
DSA Directory Service Agent
DSBAM Double-SideBand Amplitude Module
DSC Differential Scanning Calorimetry
DSC Document Structuring Conventions
DSCS Defense Satellite Communications System
DS Data Segment
DSDC Direct Service Dial Capability
DSD Data Structure Diagram
DS Digital carrier Span
DS Digital Signal
DS Directory Service
DS Direct Signal
DS Double-Sided
DSE Data Structure Editor
DSEE Domain Software Engineering Environment
DSI Digital Speech Interpolation
DSL Digital Subscriber Line
DSM Distinguished Service Medal
DSN Deep Space Network
DSN Digital Signal (level) N
DSO Digital Storage Oscilloscope
DSO Distinguished Service Order
DSP Decessit Sine Prole (died without issue)
DSP Defense Support Program (USAF/NRO)
DSP Digital Signal Processor; Digital Signal Processing
DSP Domain-Specific System
DSR Data Set Ready (RS-232)
DSR Digital Standard Runoff
DSR Dynamic Service Register
DSRI Digital Standard Relational Interface
DSS Data Station Selector
DSS Decision Support System
DSS Direct Station Selection [telephony]
DSSI Digital Storage Systems Interconnect
DST Daylight Saving Time
DSTN Double SuperTwisted Nematic
DSU Digital Service Unit; Data Service Unit
DSU Disk Subsystem Unit (Artecon)
DSW Dick Size War
DSX Digital System X-connect
DTA Differential ThermoAnalysis
DTA Disk Transfer Area
DTAS Digital Test Access System
DTB Data Transfer Bus
DTC Design To Cost
DTC Digital Trunk Controller
DTC Di-group Terminal Controller
DT Data Transmit
DTD Document Type Definition
DT Delirium Tremens
DT Di-group Terminal
DTE Data Terminal Equipment
DTF Dial Tone First payphone [telephony]
DTG Direct Trunk Group
DTI Department of Trade and Industry (U.K.)
DTIF Digital Transmission Interface Frame
DTL Diode Transistor Logic
DTMF Dial Tone Multi Frequency [telephony]
DTP DeskTop Publishing
DTR Data Terminal Ready
DTRT do the right thing
DTS Distributed Time Service
DTSS Dartmouth TimeSharing System
DTU Demand Transmission Unit
DTU Di-group Terminal Unit
DTWT do the wrong thing
DUA Directory User Agent
DUATS Direct User Access Terminal System
DU Decision Unit
DUI Driving Under the Influence
DUT Device Under Test
DUV Data Under Voice
DVC Digital Voice Card
DV Deo Vo lente (God willing)
DVI DeVice Independent
DVI Digital Video Interactive
DVMA Direct Virtual Memory Access, see DMA, device uses MMU.
DVM Digital Volt Meter
DVM Doctor of Veterinary Medicine
DVMRP Distance-Vector Multicast Routing Protocol
DVX Digital Voice eXchange
DWAPS Defense Warehousing Automated Processing System
DWB Documenter's WorkBench
DW Dead Weight
DWI Driving While Intoxicated
DWIM Do What I Mean
DX Distance (as in long distance radio communication)
DXT Data eXtractT facility
E911 Enhanced 911
EAA Experimental Aircraft Association
EADAS Engineering and Administrative Data Acquisition System
EAEO Equal Access End Office
EAFB Edwards Air Force Base
EARN European Academic Research Network
EASD Equal Access Service Date
EAS Engineering Administration System
EAS Extended Announcement System
EAS Extended Area Service
EASI Enhanced Asynchronous SCSI Interface
EBCDIC Extended Binary Coded Decimal Interchange Code
EBI Extensive Background Investigations
ECAD Electronical Computer Aided Design
ECAFE Economic Commission for Africa and the Far East
ECAP Electronic Customer Access Program
ECASS Electronically Controlled Automatic Switching System
ECASS Export Control Automated Support System
ECC Enter Cable Change
ECC Error Checking and Correcting
ECC Error Correction Code
ECCM Electronic Counter-CounterMeasures
ECCS Economic C (hundred) Call Seconds
ECD East Coast Division (Sun)
ECDO Electronic Community Dial Office
EC European Community
EC Exchange Carrier [telephony]
ECF Enhanced Connectivity Facility
ECG ElectroCardioGram
ECL Emitter Coupled Logic (see also TTL)
ECL Error Correction Logic
ECLSS Environmental Control and Life Support System [Space]
ECMA European Computer Manufacturers Association
ECM Electronic Counter Measure
ECM European Common Market
ECN Engineering Computer Network (at Purdue)
ECO Ecological
ECO Electronic Central Office
ECO Engineering Change Order
ECOM Electronic Computer Originated Mail, "E-COM"
ECPA Electronic Communication Privacy Act
ECP/EMP Excessive Cross Post(ing) / Excessive Multi-post(ing)
ECPT Electronic Coin Public Telephone
ECR Engineering Change Request
ECSA Exchange Carriers Standards Association
ECS Electronic Crosconnect System
ECS Environmental Control System
ECT ElectroConvulsive Therapy
ECV Electric Cargo Vehicle [NASA OEXP]
EDAC Electromechanical Digital Adapter Circuit
EDA Electron Donor-Acceptor
EDA Electronic Design Automation
EDD Expert Dungeons & Dragons, "ED&D"
EDF Electricite de France
EDGAR Electronic Data Gathering, Analysis, and Retrieval
EDI Electronic Data Interchange
EDIF Electronic Design Interchange Format
EDO Extended Duration Orbiter [Space]
EDP Electronic Data Processing
EDS Electronic Data Systems
EDSX Electronic Digital Signal X-connect
EDTA Ethylene Diamine Tetraacetic Acid
EDTCC Electronic Data Transmission Communications Central
EDT Eastern Daylight Time
EDV Elektronische DatenVerarbeitung
E East
EEC European Economic Community
EECT End-to-End Call Trace
EEDP Expanded Electronic tandem switching Dialing Plan
EE Electrical or Electronics Engineer
EEG ElectroEncephaloGram
EEHO Either End Hop Off
EEI Equipment-to-Equipment Interface
EEL Epsilon Extension Language
EEM External Expansion Module (Sun)
EEO Errors and Omissions Excepted, "E&EO"
EEPROM Electrically Erasable Programmable Read Only Memory
E Espionage
EFD Ellington Field, Houston TX
EFI Electronics For Imaging (Co.)
EFIS Electronic Flight Instrumentation System
EFRAP Electronic Feeder Route Analysis Program
EFS Error Free Seconds
EGA Enhanced Graphics Adapter
EG Evil Grin
EG Exempli Gratia, "e.g." (for example)
EGP Exterior Gateway Protocol
EGREP Extended GREP
EGRET Energetic Gamma Ray Experiment Telescope (on GRO)
EHF Extremely High Frequency (30-300GHz)
EHP Error Handling Package
EHT Extended Hueckel Theory
EIA Electronics Industry Association
EINE EINE Is Not Emacs
EIN Employer Identification Number
EIP Everything Is Permissible
EISA Extended Industry-Standard Architecture
EISB Electronic Imaging Standards Board
EIS Environmental Impact Statement
EIS Executive Information Systems
EIS Expanded Inband Signaling
EIS Extended Instruction Set
EISS Economic Impact Study System
EISS European Intelligence Support System
EITS Encoded Information TypeS
EJASA Electronic Journal of the Astronomical Society of the Atlantic
EKG ElectroKardioGramm (see ECG)
EKTS Electronic Key Telephone Sets
ELC Extra(Excellent) Low Cost
ELDOR ELectron-electron DOuble Resonance
EL ElectroLuminescent (as in display)
ELF Executable and Linking Format
ELF Extensible Linking Format
ELF Extremely Low Frequency
ELLE Elle Looks Like Emacs
ELM ELectronic Mailer
ELO Electric Light Orchestra
ELP Emerson, Lake and Palmer (or Powell)
ELT Emergency Locator Transmitter
ELV Expendable Launch Vehicle [Space]
EMACS Editor MACroS; Eight Megabytes And Constantly Swapping
EMA Electronic Mail Association
EMA Enterprise Management Architecture (DEC)
EMAIL Electronic MAIL, "E-MAIL"
EMBL European Molecular Biological Laboratory
EMC ElectroMagnetic Compatibility
EM ``Ear & Mouth''; recEive & transMit leads of a signalling system, "E&M"
EM Engineering Model
EM Enlisted Man (see EW)
EMFBI Excuse Me For Butting In
EMF ElectroMotive Force
EMI ElectroMagnetic Interference
EML Expected Measured Loss
EMP ElectroMagnetic Pulse
EMPRESS EnvironMental Pulse Radiation Environment Simulator for Ships
EMR ElectroMagnetic Response
EMS Electronic Message System
EMS Element Management System
EMS Element Management System, part of AT&T's UNMA
EMS Expanded Memory Specification
EMSG Email message
EMT Emergency Medical Technician
EMU ElectroMagnetic Unit
EMU Extravehicular Mobility Unit [Space]
ENDOR Electron-Nuclear DOuble Resonance
ENEA Comitato Nazionale per la Ricerca e per lo Sviloppo dell' Energia Nuclaeare e delle Energie Alternative, Italy
ENET Ethernet, "E-Net"
ENFIA Exchange Network Facility for Interstate Access
ENIAC Electronic Numerical Integrator and Calculator
ENS ENSign
EOD End Of Discussion
EOD Erasable Optical Disk
EOE Electronic Order Exchange
EOE Equal Opportunity Employer
EO End Office [telephony]
EO Erasable Optical
EOF End Of File
EOL End Of Lecture
EOL End Of Line
EOM End Of Message
EOM End Of Month
EOS Earth Observing System
EOS Electrical OverStress
EOS Extended Operating System
EOT End Of Transmission
EOTT End Office Toll Trunking
EPA Enhanced Performance Architecture
EPA Environmental Protection Agency
EPD Entry Products Division
EP Emulation Program
EP Experience Points
EP Extended Play
EPL Electronic switching system Program Language
EPOS Engineering and Project-management Oriented Support system
EPPS Electronic Pre-Press Systems.
EPR Electron Paramagnetic Resonance
EPR Ethylene Propylene Rubber
EPRI Electric Power Research Institute
EPROM Erasable Programmable Read-Only Memory
EPSCS Enhanced Private Switched Communication Service
EPS Encapsulated PostScript
EPSF Encapsulated PostScript File
EPSF Encapsulated PostScript Format
EPSI Encapsulated PostScript Interchange
EPT Empire of the Petal Throne
EPTS Electronic Problem Tracking System
EPUB Electronic PUBlication
EPW Enemy Prisoner of War
EQ Educational Quotient (see IQ)
EQUEL Embedded QUEL
ERA Earned Run Average
ERA Entity-Relationship-Attribute
ERA Equal Rights Amendment
ERAR Error Return Address Register
ERD Entity-Relationship Diagram
ERE Entity-Relationship Editor
ER Emergency Room
EREP Environmental Recording Editing and Printing
ER Error Register
ERICA Experiment on Rapidly Intensifying Cyclones over the Atlantic
ERICA Eyegaze Response Interface Computer Aid
ERISA Employee Retirement Income Security Act
ERL Echo Return Loss
ERP Effective Radiated Power
ERS Earth Resources Satellite (as in ERS-1)
ERT Earth Resources Technology [Space]
ERU Error Return address Update
ESAC Electronic Surveillance Assistance Center
ESAC Electronic Systems Assistance Center
ESA Enterprise Systems Architecture (MVS/XA followon)
ESA European Space Agency
ESB Emergency Service Bureau
ESCA Electron Spectroscopy for Chemical Analysis
ESD ElectroStatic Discharge
ESD Engineering Service Division
ESDI Enhanced Standard Device Interface
ESE East South East
ES End System
ES Expert System
ES Extra Segment
ESF Extended SuperFrame
ESF Extended Superframe Format
ESH End System Hello
ESI ElectroStatic Interference
ESIS End System-Intermediate System, "ES-IS"
ESL Emergency Stand-Alone
ESMD Embeded Storage Module Disk
ESMD Enhanced Storage Module Device
ESM Electronic Support Measures
ESM External Storage Module (Sun)
ESN Electronic Serial Number
ESN Electronic Switched Network
ESO European Southern Observatory
ESOP Employee Stock Ownership Plan
ESPEC Ethernet SPECification (DIX)
ESP Enhanced Service Provider
ESP Extra Sensory Perception
ESPRIT European Strategic Programme of Research and Development in Information Technology
ESPS Entropic Signal Processing System
ESR Electron Spin Resonance
ESS Electronic Switching System [telephony]
ESS Environmental Stress Screening
ESSEX Experimental Solid State EXchange
ESSX Electronic Switching Systen eXchange
EST Eastern Standard Time
ETACC External Tank/Aft Cargo Carrier, "ET/ACC" (see also ET) [Space]
ETA Estimated Time of Arrival
ETAS Emergency Technical ASsistance
ETC Et cetera, and so on...
ETD Estimated Time of Departure
ET Eastern Time
ET Electron Transfer
ET External Tank [of the US Space Shuttle]
ET ExtraTerrestrial [Space]
ETFD Electronic Toll Fraud Device [telephony]
ETF Electronic Toll Fraud
ETH Eidgnoessiche Techniche Hochschule
ETLA extended three letter acronym
ETLA Extended Three Letter Acronym
ETLA Extended Three Letter Acronym
ETN Electronic Tandem Network
ETO Earth-to-Orbit [Space]
ETR Eastern Test Range
ETSACI Electronic Tandem Switching Adminstration Channel Interface
ETS Electronic Tandem Switching
ETS Electronic Translation System
ETSI European Telecommunication Standards Institute
ETSSP ETS Status Panel
ETV Education TeleVision
EUC Extended Unix Code
EUNET European UNIX NETwork, "EUnet"
EUUG European UNIX Users Group
EUVE Extreme UltraViolet Explorer
EUV Extreme UltraViolet
EVA ExtraVehicular Activity
EVX Electronic Voice eXchange
EW Electronic Warfare
EW Enlisted Woman (see EM)
EWO Engineering Work Order
EWOS European Workshop for Open Systems
EWS Engineering Work Station
EXPO World Exposition
F2F Face to Face / Female To Female
FAA Federal Aviation Administration (U.S.)
FAB Feature-Advantage-Benefit
FACD Foreign Area Customer Dialing
FACOM Fujitsu Automatic Computer
FACS Facilities Assignment and Control System
FAD Flavin Adenine Diphosphate
FAE Fuel Air Explosive
FAESHED Fuel Air ExploSive, HElicopter Delivered
FA Factory Automation
FA Fat Admirer, one who prefers a fat sexual/romantic partner
FA Finance Accounting (Sun)
FA Football Association (British soccer)
FA Fuse Alarm
FAG Forced Air Gas
FAI Federation Aeronautique International
FAO Food and Agriculture Organization [U.S. Government]
FAQ Frequently Asked Question(s)
FAQL Frequently-Asked Questions List
FAR Federal Acquisition Regulation
FAR Federal Aviation Regulations (U.S.)
FAR Federation of American Research
FARNET Federation of American Research NETworks
FAS Foreign Agricultural Service
FAS Free Alongside Ship
FASST Flexible Architecture Standard System Technology
FAST Fast Auroral SnapshoT explorer
FAST First Application System Test
FAT File Allocation Table
FAT Foreign Area Translation
FAX FAcsimile
FB Freight Bill
FBI Federal Bureau of Investigation [U.S. Government]
FBO Fixed-Base Operator
FBV a Dutch acronym for "Fluke, Ltd."
FCAP Facility CAPacity
FCB File Control Block
FCC Federal Communications Commission [U.S. Government]
FCC Federal Computer Conference
FCC Forward Command Channel
FCCSET Federal Coordinating Council for Science, Education and Technology (under OSTP)
FCFS First Come, First Served
FC Full Color
FCG False Cross or Ground
FCO Field Change Order
FCRC Federal Contract Research Center
FCS File Control Systemction
FCS First Customer Ship (SunOS Releases)
FCS Frame Check/Control Sequence
FCT Four Corner Test (4FCT)
FDA Food and Drug Administration [U.S. Government]
FDC Floppy Disk Controller
FDDI Fiber Distributed Data Interface
FDDIII FDDI supporting isochronous traffic, "FDDI-II"
FD File Descriptor
FD Floppy/Flexible Disk(ette)/Drive
FDHD Floppy Drive High Density
FDIC Federal Deposit Insurance Corporation [U.S. Government]
FDL File Definition Language
FDM Frequency-Division Multiplexing
FDP Field Development Program
FDR Franklin Delano Roosevelt
FDX Full DupleX
FEA Finite Element Analysis
FEC Forward Error Correction
FED Far End Data
FEDSIM FEDeral Systems Integration and Management center
FE Format Effecters
FE Front End
FEHQ Fluke European HeadQuarters
FEMA Federal Emergency Management Agency
FEMF Foreign Electro-Motive Force
FEM Finite Element Modeling
FEPC Fair Employment Practices Commission
FEP Fluorinated Ethylene Propylene
FEP Front End Processor
FEPS Facility and Equipment Planning System
FERS Federal Employees Retirement System
FET Far East Trading
FET Federal Excise Tax
FET Field Effect Transistor
FEV Far End Voice
FFA Field Failure Analysis
FFA Future Farmers of America
FFC Free For Chat
FF Fist F*
FF Flip-Flop
FFRDC Federally Funded Reseach and Development Center
FFS Fast File System
FFS For Fuck's Sake
FFT Fast Fourier Transform
FGA Feature Group A, "FG-A" [telephony:Line Side term. for LD carriers]
FGB Feature Group B, "FG-B" [telephony:Trunk Side term. for LD carriers (aka ENFIA B), 950 service]
FGC Feature Group C, "FG-C" [telephony]
FGD Feature Group D, "FG-D" [telephony:Trunk Side term. for LD carriers, 1+ service]
FGM Female Genital Mutilation
FGREP Fixed GREP
FGS Fine Guidance Sensors (on HST)
FHA Federal Housing Administration
FHA Future Homemakers of America
FHLMC Federal Home Loan Mortgage Association (Freddie Mac)
FHMA Federal Home Mortgage Association (Fannie Mae)
FHST Fixed Head Star Trackers (on HST)
FIB Focused Ion Beam
FICA Federal Insurance Contributions Act
FID Free Induction Decay
FIDO Fog Investigation Dispersal Operation
FIFO First In, First Out
FILO First In, Last Out
FIMS Forms Interface Management System
FINE FINE Is Not Emacs
FIN Field Information Notice
FIOC Frame Input/Output Controller
FIO Frequency In and Out
FIP Facility Interface Processor
FIPS Federal Information Processing Standard
FIR Far InfraRed
FIR Field Information Report
FIR Finite Impulse Response
FIRMR Federal Information Resource Management Regulation
FITB Fill In The Blank
FIT Federal Information Technologies, inc.
FITS Flexible Image Transport System
FLACC Full Level Algol Checkout Compiler
FL Florida
FLOP FLoating point OPeration
FLOPS FLoating-point OPerations per Second
FLRA Federal Labor Relations Authority
FLS Floating License Server
FLT Front Load Tape
FMAC Facility Maintenance And Control
FMB Federal Maritime Board
FMC Flexible Manufacturing Cell
FMCS Federal Mediation and Conciliation Service
FMEA Failure Mode and Effect Analysis
FM Fibromyalgia
FM Frequency Modulation
FMR Field Marketing Representative (Sun)
FMS Fieldbus Message Specification
FMS Financial Management Service (Treasury Dept)
FMS Flexible Machining/Manufacturing System
FMS Forms Management System
FNC Federal Networking Council
FNPA Foreign Numbering Plan Area
FOAC Federal Office Automation Center
FOAD F* Off And Die
FOB Free On Board
FOC Faint Object Camera (on HST)
FOC Fiber Optic Communications
FOC Free Of Charge
FOCSY FOldover Corrected SpectroscopY
FO Forecast Order
FO Foreign Office
FO Forward Observer
FOIA Freedom Of Information Act
FOIMS Field Office Information Management System
FOIRL Fiber Optic Inter Repeater Link
FON Fiber Optics Network
FOOBAR See FUBAR
FORCS Faa's Operational Reporting Communication System
FORD Fix Or Repair Daily
FORD Found On Road Dead
FOR Free On Rail
FORTRAN FORmula TRANslator
FOSE Federal Office Systems Exposition
FOS Faint Object Spectrograph (on HST)
FOT Fiber Optic Transceiver
FOT Free On Truck
FOV Field Of View
FPA Floating Point Accelerator
FPC Fish Protein Concentrate
FPC Floating Point Coprocessor
FPDU FTAM Protocol Data Unit
FPE Floating Point Engine
FPE Foam PolyEthylene
FPHA Federal Public Housing Authority
FPLA Field Programmable Logic Array (see PLA)
FPM Feet Per Minute
FPO Fleet Post Office
FPP Floating Point Processor
FPS Favorite Play Sequence
FPS Feet Per Second
FPS Foot-Pound-Second
FPU Floating Point Unit
FQDN Fully-Qualified Domain Name
FRACTAL FRACTional dimensionAL
FRAM Ferroelectric RAM
FRB Federal Reserve Board
FRD Fire RetarDant
FRED Fred Resembles Emacs Deliberately
FREE Fathers Rights and Equality Exchange
FR Flat Rate
FR Frame Relay
FRG Federal Republic of Germany (West Germany)
FRICC Federal Research Internet Coordinating Committee
FROG Free Rocket Over Ground
FRPG Fantasy Role Playing Game
FRR Flight-Readiness Review
FRS Federal Reserve System
FRS Flexible Route Selection
FRU Field Replacable Unit
FSCM Federal Supply Code for Manufactures
FSDO Flight Standards District Office
FSDO For Some Definition Of
FSE Field Service Engineer
FSF Free Software Foundation
FS Field Service
FS File System
FS Fine Structure
FS Floppy System
FSK Frequency Shift Keying
FSLIC Federal Savings and Loan Insurance Corporation
FSS Fast System Switch (System V)
FSS Federal Supply Service
FSS Flight Service Station
FSU Florida State University
FSU Former Soviet Union
FSW Forward Swept Wings
FT1 fractional T1, common carrier transmission in multiples of 64 kb/s
FTAM File Transfer, Access, and Management (ISO FTP equivalent)
FTC Federal Trade Commission
FTE Factory Test Equipment
FT Foot
FT Fourier Transform
FTG Final Trunk Group
FTL Faster Than Light
FTL For The Loss/Lose
FTM Female To Male (transgendered)
FTMP For The Most Part
FTP File Transfer Protocol
FTPI Flux Transitions Per Inch
FTR For The Record
FTS Federal Telecommunications System [US Government]
FTS Federal Telephone System [telephony]
FTS Flight Telerobotic Servicer [Space]
FTW File Tree Walk
FTW For The Win
FTZ FernmeldeTechnisches Zentralamt
FTZ Free Trade Zone
FUBAR F***ed Up Beyond All Repair/Recognition
FUD Fear, Uncertainty, and Doubt
FUSE Far Ultraviolet Spectroscopic Explorer
FUS Full-Use Standard
FV Folio Verso, "fv" (on the back of the page)
FWD Front Wheel Drive
FW Fringeworthy
FWHM Full Width at Half Maximum
FWIW For What It's Worth
FX Foreign eXchange [telephony]
FX Effects (special/sound)
FYA For Your Action
FY Fiscal Year
FYI For Your Information
FYS For Your Signature
GAAP Generally Accepted Accounting Principles
GAAS Gallium Arsenide, "GaAs"
GAB Group Audio Bridging [telephony]
GADO General Aviation District Office
GA Gamblers Anonymous
GA General Assembly
GA General Average
GA General of the Army
GA Georgia
GA Go Ahead
GAIA Earth's self-sustaining Biosphere, "Gaia"
GAIA GUI Application Interoperability Architecture
GAL Generic Array Cell
GAN Global Area Network
GAO General Accounting Office
GAR Grand Army of the Republic
GAS Get-Away Special
GATED GATEway Deamon
GATT General Agreement on Tariffs and Trade
GAW Guaranteed Annual Wage
GB Gangbusters
GB GigaByte
GB Great Britain
GBIP General Purpose Interface Bus
GBS Group Bridging Service
GBT Green Bank Telescope
GCA General Communications Architecture (Ingres)
GCA Ground Controlled Approach
GCC Gnu C Compiler
GCD Ground Controlled Descent
GC Garbage Collection (LISP)
GC Gas Chromatograph(y)
GC Graphic Context
GCL Graphics Command Language
GCM General Court Martial
GCR Group-Coded Recording (magnetic tape, 6250 bpi)
GCS Group Control System
GCT Greenwich Civil Time
GCVS General Catalog of Variable Stars
GDB Gnu DeBugger
GDI Graphical Display Interface
GDOS Graphics Device Operating System
GDP Gross Domestic Product
GD&R Grinning, Ducking, and Running (after a smart ass comment)
GDS Great Dark Spot
GDT Global Descriptor Table
GECOS General Electric Comprehensive Operating System
GECR Global Environmental Change Report
GE General Electric
GEISCO General Electric Information Services COmpany
GEIS General Electric Information Systems
GEM Giotto Extended Mission
GEM Graphics Environment Manager
GEMS General Electric Medical Systems
GEO Geosynchronous Earth Orbit [Space]
GFCI Ground Fault Circuit Interrupter
GF Girl Friend
GG Genetic Girl
GGP Gateway-to-Gateway Protocol
G Gravity
G grin
<g> grin (or <G> big grin, vars. incl <VEG> Very Evil Grin)
GHOD General Heuristic Organizing Device
GHQ General HeadQuarters
GHRS Goddard High Resolution Spectrograph (on HST)
GHZ Giga HertZ, "GHz" (unit of frequency, 1,000,000,000 cycles per second)
GID Group IDentity
GIF Graphics Interchange Format
GI Galvanized Iron
GI Gastro Intestinal
GI General Issue
GIGO Garbage In, Garbage Out
GI Government Issue
GIN Graphics INput
GISS Goddard Institute for Space Studies
GIYF Google Is Your Friend
GJIAGDVYFCN Go Jump In a God Damned Volcano, You Fucking Cave Newt (talk.bizarre)
GKS Graphical Kernel Standard
GKSM GKS Metafile
GLBTH Gay,Lesbian,Bi,Trans,Het
GL Graphic Library
GLOMR Global Low-Orbiting Message Relay
GMBH Gesellschaft Mit Beschraenkter Haftung
GMC Giant Molecular Cloud
GMD Gesellschaft fuer Mathematik und Datenverarbeitung
GM Game Master
GM General Manager
GM General Motors
GM Guided Missile
GMRT Giant Meter-wave Radio Telescope
GMTA great minds think alike
GMTA Great Minds Think Alike
GMT Greenwich Mean Time
GMW Give me More Windows
GND GrouND
GNMA Government National Mortgage Association (Ginnie Mae)
GNP Gross National Product
GNU GNU's Not Unix
GoAT Go Away, Troll
GOES Geostationary Orbiting Environmental Satellites
GOK God Only Knows
GOK God Only Knows
GOP Grand Old Party
GOS Grade Of Service
GOSIP Government Open Systems Interconnection Profile
GOWI Get On With It
GOX Gaseous OXygen
GPC General Purpose Computer
GPCI Graphics Processor Command Interface
GPD Graphics Products Division
GP General Practitioner
GP Grand Prix
GP Graphics Processor
GP Group Processor
GPIB General-Purpose Interface Bus
GPI Graphics Programming Interface
GPL General Public License
GPL GNU Public License
GPL Graphics Programming Language
GPM Gross Product Margin
GPO General Post Office
GPO Government Printing Office
GPS General Problem Solver
GPS Global Positioning System [Space]
GPSI Graphics Processor Software Interface
GPSS General Purpose System Simulator
GQ General Quarters
GRASS Geographical Resources Analysis Support System
GRB Gamma Ray Burst(er)
GRD GRounD
GREP Global Regular Expression Print, g/re/p, (UNIX command)
GRI Graduate, Realtors Institute
GRIPS Government Raster Image Processing Software
GRO Gamma Ray Observatory [Space]
GROPE Graphical representation of protocols in Estelle
GRPMOD GRouP MODulator, "GRP MOD"
GRS Gamma Ray Spectrometer (on Mars Observer)
GRS Great Red Spot
GSA General Services Adminstration [U.S. Government]
GSA Girl Scouts of America
GSA Government Services Administration
GSAT General telephone and electronics SATellite corporation
GSBCA General Services administration Board of Contract Appeals
GSC Guide Star Catalog (for HST)
GSFC Goddard Space Flight Center (Greenbelt, MD) [NASA]
GS General Schedule
GS Glide Slope
GS Golden Shower/Getting Started
GS Gray-Scale
GSTS Ground-based Surveillance and Tracking System
GTC General Telephone Company
GTE General Telephone and Electric [Corporate name]
G2G Got To Go
GTG Got To Go
GTG Good To Go
GT Gross Ton
GT Group Technology
GTO Gaussian Type Orbital
GTO Geostationary Transfer Orbit
GTSI Government Technology Services, inc.
GTT Global Title Transmission
GUG Generic UTC Greeting
GUIDE Graphical User Interface Design Editor (Sun)
GUI Graphical User Interface
GUS Guide to the Use of Standards (SPAG publication)
GUUG German UNIX Users Group
GWEN Ground Wave Emergency Network
GW Gamma World
GWS Graphics Work Station
HACD Home Area Customer Dialing
HA Home Automation
HAL Hard Array Logic
HAL Hardware Abstraction Layer
HAL Heuristically programmed ALgorithmic computer (2001)
HAM Hold And Modify
HAND have a nice day
HAND Have A Nice Day
HANFS Highly Available Network File System
HAO High Altitude Observatory
HAP Host Access Protocol
HARM High-Availability, Reliability, and Maintainability
HASP Houston Automated Spooling Program
HAT Hashed Address Table
HBA Host Bus Adapter (SCSI)
HB HemogloBin, "Hb"
HBM Her British Majesty; His British Majesty
HBO Home Box Office
HCFA Health Care Financing Administration
HCF Halt and Catch Fire
HC Holy Communion
HC House of Commons
HCL High Cost of Living
HCL Host Control Links
HCR Hodge Computer Research, inc.
HCSDS High-Capacity Satellite Digital Service
HCTDS High-Capacity Terrestrial Digital Service
HDA Head Disk Assembly (in winchester disk drives)
HDBV Host Data Base View
HD Hard Disk
HD Heavy Duty
HD Henry Draper catalog entry
HD High Density
HDLC High-level Data Link Control
HDL High Density Lipoprotein
HDN Hochgeschwindigkeits-DatenNetz
HDTV High Definition TeleVision
HDX Half DupleX
HEAO High Energy Astronomical Observatory [satellite]
HEAP Home Energy Assistance Program
HEDM High Energy-Density Matter [Space]
HE His Eminence; His Excellency
HEHO High End Hop Off
HEM High-level Entity Management
HEMP Help End Marijuana Prohibition
HEMS High-level Entity Management System
HEMT High Electron Mobility Transistor
HEO High Earth Orbit [Space]
HEP High Energy Physics
HERA HErmes Robotic Arm, "HeRA"
HERO Hazards of Electromagnetic Radiation to Ordnance
HETCOR HETeronuclear chemical-shift CORrelation
HFC HyperFine (splitting) Constant
HFE Human Factors Engineering
HF Hawthorne Farms (Intel)
HF High Fantasy
HF High Frequency (3-30MHz)
HFS Hierarchical File System (Apple Macintosh)
HFS HyperFine Splitting
HGA High Gain Antenna
HGC Hercules Graphics Card
H Harn
H Height
HHIS hanging head in shame
HHOK/S Ha Ha, Only Kidding/Serious
HIC Hybrid Integrated Circuit
HIFO Highest-In, First-Out
HI Hawaii
HIIPS Hud Integrated Information Processing Services
HIPPI HIgh Performance Parallel Interface
HIPPI High Performance Peripheral Interface
HIRES HI-RESolution
HIS Honeywell Information System
HIV Human Immuno-deficiency Virus
HLC Heavy Lift Capability [Space]
HLHSR Hidden Line & Hidden Surface Removal
HLL High-Level Language
HLV Heavy Lift Vehicle [Space]
HMA High Memory Area
HMC Halley Multicolor Camera (on Giotto)
HM High-resolution Monochrome
HMO Hueckel Molecular Orbital
HMOS High performance Metal Oxide Semiconductor (see MOS)
HMPA HexaMethylPhosphorAmide (HMPT)
HMP Host Monitoring Protocol
HMPT HexaMethylPhosphoric Triamide
HMS His/Her Majesty's Ship
HMT His/Her Majesty's Transport
HNG Horny Net Geek
HNPA Home Numbering Plan Area [telephony]
HNS Hospitality Network Service
HOBIC HOtel Billing Information Center
HOBIS HOtel Billing Information System
HOESY Heteronuclear Overhauser Enhancement SpectroscopY
HOL High-Order System
HOMO Highest Occupied Molecular Orbital
HOTOL HOrizontal Take-Off and Landing
HOW Home Owners Warranty
HPFS High Performance File System (OS/2)
HPGE High Purity Germanium
HPGL Hewlett Packard Graphics Language
HP Hewlett-Packard, inc. [Corporate name]
HP Higher Power (sort of an AA "in" term, usually God)
HP High Pressure
HP Hit Points
HP HorsePower
HPIB Hewlett-Packard Interface Bus
HPLC High-Performance Liquid Chromatography
HPLT High-Productivity Languages/Tools, "HPL/T"
HPN White Plains NY
HPO High Performance Option
HPPA HP Precision Architecture
HQ HeadQuarters
HR Hertzsprung-Russell (diagram)
HRH Her/His Royal Highness
HR House of Representatives
HR Human Resources
HRI High Resolution Imager (on ROSAT)
HSB Hue, Saturation, Brightness
HSC Hierarchical Storage Controller
HSFS High Sierra File System
HS High School
HSI High Speed Interface
HSI Horizontal Situation Indicator
HSLN High Speed Local Network
HSP High Speed Photometer (on HST)
HSSDS High-Speed Switched Digital Service
HST Hawaiian Standard Time
HST High Speed Technology
HST Hubble Space Telescope
HTF How The Fuck
HTH Hope This Helps
HTH Hand To Hand [combat]
HTH Happy To Help
HT High Tension (as in electric power transmission)
HT Horizontal Tab
HTK Hits To Kill
HUAC House Unamerican Activities Committee
HUD Heads Up Display
HUD Housing and Urban Development [U.S. Government]
HUGE Hewlett-packard Unsupported Gnu Emacs
HU High Usage
HUTG High Usage Trunk Group
HUT Hopkins Ultraviolet Telescope (ASTRO package)
HVAC Heating, Ventilation, and Air Conditioning
HV High Voltage
HW2000 Highway 2000
HWD Hayward CA
HWM High-Water Mark
HWNINS He whose name is not spoken
HWP Height and Weight Proprotional (i.e.: "normal" build)
HWSNBN He who should not be named
HWWNBN He Who Will Not Be Named (refers to a specific troll person)
HZ HertZ, "Hz" (unit of frequency, cycles per second)
I18N InternationalizatioN (count the letters)
IAAL I Am Actually Laughing
IAB Interactive Application Builder
IAB Internet Activities Board
IAC In Any Case
IAD Dulles International, Washington DC
IAEA International Atomic Energy Agency
IAE In Any Event
IAH Houston (Intercontinental) TX
IA Inspection Authorization
IANA Internet Assigned Numbers Authority
IANAL I Am Not A Lawyer
IAP Internet Access Provider
IAPPP International Amateur/Professional Photoelectric Photometry
IATA International Air Transport Association
IAUC IAU Circular
IAU International Astronomical Union
IAW In Accordance With
IB Instruction Buffer
IBM Ingrained Batch Mentality
IBM International Brotherhood of Magicians
IBM International Business Machines [Corporate name]
IBM Itty Bitty Machines
IBN Integrated Business Network
ICAN Individual Circuit ANalysis
ICB Interstate Computer Bank
ICBM InterContinental Ballistic Missile
ICBW I Could Be Wrong
ICCC Inter-Client Communication Convention (X)
ICCCM Inter-Client Communication Conventions Manual
ICC Interstate Commerce Commission
ICD Interactive Call Distribution
ICE In-Circuit Emulator
ICE International Cometary Explorer
ICE Intrusion Countermeasures Electronics
ICI Imperial Chemical Industries
IC Independent Carrier
IC Integrated Circuit
IC Interexchange Carrier [telephony] (see also IEC)
IC Inter-LATA Carrier
ICJ International Court of Justice
ICLID Individual Calling Line ID
ICL International Computers Limited
ICM Integrated Call Management
ICMP Internet Control Message Protocol
ICOCBW I Could Of Course Be Wrong
ICON Inter CONtinental
ICP Integrated Channel Processor
ICP Inventory Control Points
ICRC International Cosmic Ray Conference
ICSC Inter-LATA Customer Service Center
ICST Institute for Computer Science and Technology
ICT In-Circuit Test
ICT Interactive Consumer Terminal
IDA Intercommunication Data Areas
IDA International Dark-sky Association
IDA International Development Association
IDC Insulation Displacement Contact
IDDD International Direct Distance Dial [telephony]
IDEA International Dance Exercise Association
IDEA Internet Design, Engineering, and Analysis notes (IETF RFCs)
IDE Integrated Development Environment
IDE Integrated Drive Electronics
IDE Interactive Development Environments, inc
IDF Intermediate Distributing Frame [telephony]
IDGI I Don't Get It
ID Idaho
ID IDentification
IDI Initial Domain Identifier
IDK I Don't Know
IDL Interactive Data Language
IDL Interface Description Language
IDM Image Data Manager
IDP Initial Domain Part
IDP Internet Datagram Protocol (XNS equivalent to IP)
IDS Internal Directory System
IDTS I Don't Think So
IDVC Integrated Data/Voice Channel
IDV Interlibrational Derived Vehicle [Space]
IEC InterExchange Carrier [telephony] (see also IC)
IEC International Electrotechnical Commission
IEEE Institute of Electrical and Electronics Engineers
IEE Institute of Electrical Engineers (UK)
IE Id Est, "i.e." (that is)
IE Id Est (that is)
IE Indo-European
IE Inter Ethernet
IEN Internet Engineering Notes
IEN Internet Experiment Notebook (precedes RFCs)
IESG Internet Engineering Steering Group
IETF Internet Engineering Task Force
IETGFTP It's Easier To Get Forgiveness Than Permission
IFB Invitation For Bids
IFC International Finance Corporation
IFC International Freighting Corporation
IFF Identification - Friend or Foe
IFF Image File Format
IFF Interchange File Format
IFF Iterative Function Fractal
IF InterFace, "I/F"
IF Intermediate Frequency
IFIP International Federation for Information Processing
IFLA International Federation of Library Associations
IFR Instrument Flight Rules
IFRPS Intercity Facility Relief Planning System
IGES Initial Graphics Exchange Standard
IGM InterGalactic Medium
IGMP Internet Group Multicast Protocol
IGP Interior Gateway Protocol
IGY International Geophysical Year
IHA I Hate Acronyms
IHP Indicated HorsePower
IHS Integrated Hospital Support
IIA Information Industry Association
IIANM If I Am Not Mistaken
IIE Institute of Industrial Engineers
IIHF International Ice Hockey Federation
IIL Integrated Injection Logic
IIN Integrated Information Network
IINM If I'm Not Mistaken
IIRC If I Recall Correctly
IISPB Image and Information Standards Policy Board
IIUC If I Understand Correctly
ILO International Labor Organization
ILS Instrument Landing System
ILV Industrial Launch Vehicle [Space]
IMAO In My Arrogant Opinion
IMAP3 Interactive Mail Access Protocol - Version 3
IMAP Interactive Mail Access Protocol
IMAS Integrated Mass Announcement System
IMC Instrument Meteorological Contitions
IMCO In My Considered Opinion
IMD Industry Marketing Development
IME In My Experience
IMF International Monetary Fund
IMHO In My Humble Opinion
IM Installation & Maintenance, "I&M"
IM Instant Message
IM Interface Module
IMM Input Message Manual
IMNERHO In My Never Even Remotely Humble Opinion
IMNSHO In My Not So Humble Opinion
IMO In My Opinion
IMPACT Inventory Management Program and Control Technique
IMP Interface Message Processor [ARPANET/MILNET] (replaced by PSN)
IMSA International Motor Sports Association
IMS Integrated Management System
IMSL International Mathematical Subroutine Library
IMSLTHO In My Slightly/Somewhat Less Than Humble Opinion
IMSO Integrated Micro Systems Operation (Intel)
IMSVS Information Management System/Virtual Storage, "IMS/VS"
IMT Image Management Terminal
IMT Inter-Machine Trunk
IMTS Improved Mobile Telephone Service
IMX In My eXperience (perferred form: IME)
INADEQUATE Incredible Natural Abundance Double-QUAntum Transfer Experiment
INADS INitialization and ADministration System [telephony]
INC InterNational Carrier
INDO Intermediate Neglect of Differential Overlap
INDOR INternuclear DOuble Resonance
INEPT Insensitive Nucleus Enhancement by Polarization Transfer
INGRES Interactive Graphic Retrieval System
IN Indiana
IN Intelligent Network
INL Inter Node Link
INMS integrated network management system, part of AT&T's UNMA
INN Inter Node Network
INOC Internet Network Operations Center
INRIA Institut National de Recherche en Informatique et Automatique
INRI Iesus Nazerenus Rex Iudaeorum (Jesus of Nazareth, King of the Jews)
INS Immigration and Naturalization Service
INS Inertial Navigation System
INS Information Network System
INSTITUTE INSTITUTE's Name Shows That It's Totally Unrelated To EMACS
INTAP INteroperability Technology Association for information Processing
INTELSAT INternational TELecommunications SATellite consortium
INWATS INward Wide Area Telephone Service [telephony]
IOCC International Overseas Completion Center
IOC Input/Output Controller
IOC International Operating Center [telephony, US]
IOD Identified Outward Dialing
IO Input/Output, "I/O"
IO Inward Operator
IONL Internal Organization of the Network Layer
IOOF International Order of Odd Fellows
IOP Input-Output Processor
IOTA Infrared-Optical Telescope Array
IOTA International Occultation Timing Association
IOT InterOffice Trunk
IOU I Owe you (U)
IOW In Other Words
IPCC Intergovernmental Panel on Climate Change
IPCE InterProcess Communication Environment
IPC Integrated Personal Computer
IPC InterProcess Communication
IPC Inventory Process Control
IPCS Interactive Problem Control System
IPDU Internet Protocol Data Unit
IPE Integrated Programming Environment
IPI Intelligent Peripheral Interface
IP Industrial Products
IP Information Provider [telephony]
IP Innings Pitched
IP Instruction Pointer
IP Intermediate Point
IP Internet Protocol
IPLAN Integrated PLanning And Analysis
IPL Initial Program Load
IPM Impulses Per Minute
IPM Interruptions Per Minute
IPMS InterPersonal Message Services
IPO Initial Public Offering
IPO International Procurement Office
IPSE Integrated Project-Support Environment
IPS Inches Per Second
IPS Inertial Pointing System
IPS Information Processing Standards
IPT Williamsport PA
IPX Internetwork Packet exchange (of Novell Inc.)
IPXSPX Internet Packet eXchange/Sequenced Packet eXchange (Novell), "IPX/SPX"
IQ Intelligence Quotient (see EQ)
IQR Inquiry
IRAF Image Reduction and Analysis Facility
IRA Individual Retirement Account
IRA Interprocedural Register Allocation
IRA Irish Republican Army
IRAS Infrared Astronomical Satellite
IRBM Intelligent Repeater Bridge Module
IRBM Intermediate Range Ballistic Missile
IRC International Record Carrier
IRC Internet Relay Chat
IRC Internet Relay Chat
IRD Investment Recovery Department
IRDS Information Resource Dictionary Standard
IRDS InfraRed Detection Set
IRE Institute of Radio Engineers (old name for the now IEEE, q.v.)
IRG InterRecord Gap
IR Index Register
IR Information Resource
IR InfraRed
IR Internetwork Router
IRL In Real Life
IRM Information Resources Management
IRM Intelligent Repeater Module
IRMS Information Resources Management Service
IRN Intermediate Routing Node
IROR Internal Rate Of Return
IRQ Interrupt ReQuest
IRSG Internet Research Steering Group
IRS Inertial Reference System
IRS Internal Revenue Service
IRTF Internet Research Task Force
IRT In Reply To, In Regards To
ISA Industry-Standard Architecture
ISAM Indexed Sequential Access Method
ISAS Institute of Space and Astronautical Science (Japan)
ISBD International Bibliographic Description
ISBN International Standard Book Number
ISCH Interstitial-Cell-Stimulating Hormone (same as LH)
ISC Information Services Center
ISC Interactive Systems Corporation
ISC International Switching Center
ISDN Integrated Services Digital Network
ISDT Integrated Systems Development Tool
ISEE International Sun Earth Explorer (usually ISEE-3)
ISF Information Systems Factory
ISFUG Integrated Software Federal User Group
ISH Intermediate System Hello
ISI Information Sciences Institute (at USC)
IS Information Separator
IS Information Systems
IS Intermediate System
IS International Standard
IS Interrupt Set
ISIS Intermediate System to Intermediate System, "IS-IS"
ISLM Integrated Services Line Module
ISLU Integrated Services Line Unit
ISM InterStellar Medium
ISN Information Systems Network
ISN Integrated Systems Network
ISODE ISO Development Environment
ISO Infrared Space Observatory
ISO In Search Of
ISO International Standards Organization
ISOO Information Security Oversight Office
ISOP Incentive Stock Option Plan
ISP Internet Service Provider
ISPM International Solar Polar Mission
ISRG Independent Space Research Group
ISR Institute of Snow Research
ISSI Information Security Systems Inc.
ISS Integrated Switching System
ISSN Integrated Special Services Network
ISSN International Standard Serial Number
IST Initial System Test
ISTM It Seems To Me
ISTR I Seem To Recall
ISUP Integrated Services User Part
ISV Independent Software Vendor
ISV Instantaneous Speed Variation
ISY International Space Year
ITC Independent Telephone Company
ITC Inter-Task Communication
IT Industrial Technology
IT Information Technology
ITM Information Technology Management
ITMT In The MeanTime
ITSEC Information Technology Security Evaluation Criteria
ITSFWI If The Shoe Fits, Wear It
ITS Incompatible Timesharing System
ITS Institute of Telecommunication Science
ITSO Incoming Trunk Service Observation
ITT International Telephone and Telegraph
ITU International Telecommunications Union
ITUSA IT Users Standards Association
ITYM I Think You Mean
IUE International Ultraviolet Explorer
IU Integer Unit
IUS Inertial Upper Stage [Space]
IUV Interlibrational Utility Vehicle [Space]
IVDT Integrated Voice/Data Terminal
IVP Installation Verification Program
IVTS International Video Teleconferencing Service
IWBNI It Would Be Nice If
IWC Inside Wire Cable
IWS Intelligent Work-Station
IWW International Workers of the World
IXC IntereXchange Carrier (aka LD)
IX Interactive eXecutive
IXM IntereXchange Mileage
IYKWIM(AITYD) If You Know What I Mean (And I Think You Do)
JACM Journal of the Association for Computing Machinery
JAFO Just Another F**king Observer
JAL Japan Airline
JANET Joint Academic Network (U.K.)
JBS John Birch Society
JCAC Joint Civil Affairs Committee
JCAE Joint Committee on Atomic Energy
JCA Jewelry Crafts Association
JCAMP Joint Committee on Atomic and Molecular Physical data
JCEE Joint Council on Economic Education
JCET Joint Council on Educational Television
JC Jesus Christ
JC Joint Compound (plumbing)
JC Julius Caesar
JC Junior College
JCL Job Control Language
JCS Joint Chiefs of Staff
JD Justice Department
JDS John Dewey Society
JECC Japan Electronic Computer Company
JEIDA Japan Electronics Inderstry Development Association
JEM Japanese Experiment Module (for SSF)
JES Job Entry System
JES John Ericsson Society
JESUS Job Entry System of the University of Saskatuan
JFET Junction FET
JFIF JPEG File Interchange Format
JFK John F. Kennedy (and the international airport)
JFMIP Joint Financial Management Improvement Program
JFS Next Generation of JLE
JGR Journal of Geophysical Research
JIC Joint Industry Council
JIC Joint Intelligence Center
JIC Just in Case
JI Justice, Inc.
JILA Joint Institute for Laboratory Astrophysics
JIM Job Information Memorandum
JINTACCS Joint INteroperability of TActical Command and Control Systems
JISC Japanese Industrial Standards Committee
JIS Japan Industrial Standards
JIT Just In Time
JK Just Kidding / JoKe
JLE Japanese Language Enveronment
JLMK Just Let Me Know
JMO Just My Opinion
JMS John Milton Society
JMX Jumbogroup MultipleX
JOAT Jack Of All Trades
JO Job Order
JO Junior Officer
JOOC Just Out of Curiosity
JOVE Jonathan's Own Version of Emacs
JOVIAL Jules Own Version of the International Algorithmic Language
JPEG Joint Photographic Experts Group
JPL Jet Propulsion Laboratory
JRC Junior Red Cross
JSC Johnson Space Center (NASA)
JSD Jackson System Development
JSN Junction Switch Number
JSRC Joint Services Review Committee
JST Japan Standard Time
JSW Junctor SWitch
JTIDS Joint Tactical Information Distribution Systems
JTLYK Just To Let You Know
JTM Job Transfer and Manipulation
JUNET Japan UNIX Network
JV Junior Varsity
JVNC John von Neumann (Super Computer) Center, "JvNC"
JVNCNET John von Neumann (Super Computer) Center network, "JvNCnet"
K9 canine (K9 corps - army dogs)
KAO Kuiper Airborne Observatory
KAOS Killing as Organized Sport
KB Key Board
KB KiloByte
KBPS KiloBits Per Second
KBS Knowledge-Based System
KC King's Counsel (QC when queen reigning)
KC Knights of Columbus
KCL Kyoto Common Lisp
KDCI Key Display Call Indicator
KDD Kokusai Denshin Denwa Co.
KD Kiln Dried
KD Knocked Down; Knock-Down
KDT Keyboard Display Terminal
KERMIT Kl-10 Error-free Reciprocal Micro Interconnect over Tty lines
KFT KiloFeeT
KGB Komitet Gosudarstvennoi Bezopaznosti
KHYF Know How You Feel
KHz Kilo HertZ (unit of frequency, 1000 cycles per second)
KIA Killed In Action
KIAS Knot Indicated Air Speed
KIF Key Index File
KI Kiwanis International
KI Kuenstliche Intelligenz
KIP Kinetics IP
KIPS Kawasaki Integrated Power-valve System
KISS Keep It Simple, Stupid
K Kilobit
KLIPS thousands of Logical Inferences Per Second
KLOC thousands of Lines Of Code
KNF Kernel Normal Form
KO Knock Out
KOWC Key Word Out of Context
KP Key Pulse [telephony]
KP Kitchen Police
KPNO Kitt Peak National Observatory
KPO KeyPunch Operator
KQC King's College London
KR Kernighan and Ritchie, the c programming language, "K&R"
KSC Kennedy Space Center (NASA)
KSF Key Success Factor
KSH Korn SHell
KS King's Scholar
KSR Keyboard Send-Receive
KSU Key System Unit [telephony]
KTB Cretaceous-Tertiary Boundary (from German)
KTB Kali's Teeth Bracelet
KTHX OK, Thanks
KTHXBYE OK, Thanks, goodbye
KTS Key Telephone System [telephony]
KTU Key Telephone Unit [telephony]
KWIC Key Word In Context
KY Kentucky
L1 Lagrange Point #1 35,000 Miles above moon [Space]
L2 Lagrange Point #2 40,000 Miles behind moon [Space]
L3 Lagrange Point #3 (?? 35,000 Miles below moon) [Space]
L4 Lagrange Point #4 240,000 mile Earth orbit [Space]
L5 Lagrange Point #5 240,000 mile Earth orbit [Space]
L8R Later
LAB Labor
LAC Loop Assignment Center
LADAR LAser Detection And Ranging
LADT Local Access Data Transport
LAIS Local Automatic Intercept System
LAL Local Analog Loopback
LA Los Angeles
LA Louisiana
LA Low Altitude
LAMA Local Automatic Message Accounting [telephony]
LAM Master of Liberal Arts
LANCE Local Area Network Controller for Ethernet
LANL Los Alamos National Laboratory
LAN Local Apparent Noon
LAN Local Area Network
LAPB Link Access Procedure - Balanced (X.25)
LAPD Link Access Procedure on the D channel
LAPD Los Angeles Police Department
LAP Link Access Procedure
LAPM Link Access Procedure for Modems
LARC Langley Research Center, "LaRC" [NASA]
LAR Local Acquisition Radar
LART Luser Attitude Readjustment Tool (i.e.: clue-by-four)
LASER Light Amplification by Stimulated Emission of Radiation
LASS Local Area Signaling Service
LATA Local Access Transport Area
LATIS Loop Activity Tracking Information System
LAT Local Apparent Time
LAT Local Area Transport (DEC)
LAVC Local Area VAX Cluster
LAX Los Angeles International Airport
LBHS Long Beach High School
LB Light Bomber
LBL Lawrence Berkeley Labs
LBO Line Buildout
LB pound (LiBra)
LBS Load Balance System
LBS Pounds
LCA Logic Cell Array
LCAMOS Loop CAble Maintenance Operation System
LCAO Linear Combination of Atomic Orbitals
LCCIS Local Common Channel Interoffice Signaling
LCCL Line Card CabLe
LCCLN Line Card Cable Narrative
LCD Liquid Crystal Display
LCD Lowest Common Denominator
LCDN Last Called Directory Number
LCDR Lieutenant Commander
LCIE Lightguide Cable Interconnection Equipment
LC inductor-Capacitor circuit (as in filters, L is symbol inductance)
LCL Lunar Cargo Lander [NASA OEXP]
LCLOC Line Card LOCation
LC Lower Case, "l.c."
LCM Life Cycle Management
LCN Logical Channel Numbers
LCP Link Control Protocol
LCR Least Cost Routing
LCRMKR Line Card ReMarKs, Retained
LCSE Line Card Service and Equipment
LCSEN Line Card Service and Equipment Narrative
LCS Laboratory for Computer Science [MIT]
LCT Landing Craft Tanks
LDC Logical Device Coordinates
LDC Long Distance Carrier [telephony]
LDEF Long Duration Exposure Facility
LDF Large Deployable Reflector [Space]
LDL Local Digital Loopback
LDL Low Density Lipoprotein
LDMTS Long Distance Message Telecommunications Service
LDP Laboratory Data Products
LDS The Church of Jesus Christ of Latter-Day Saints
LDT Local Descriptor Table
LDX Long Distance eXtender [telephony]
LEAP Low-power Enhanced At Portable
LEAS LATA Equal Access System
LEC Local Exchange Carrier [telephony]
LED Light-Emitting Diode
LEGO Low End Graphics Option
LE Lance Ethernet
LEM Lunar Excursion Module (a.k.a. LM) (Apollo spacecraft)
LENCL Line Equipment Number CLass
LEO Low Earth Orbit [Space]
LERC Lewis Research Center, "LeRC" [NASA]
LEST Large Earth-based Solar Telescope
LFACS Loop Facilties Assignment And Control System
LF Line Feed Character
LF Line Finder
LF Low Frequency (30-300KHz)
LFSA List of Frequently Seen Acronyms
LFS Loopback File System
LGA Low Gain Antenna
LGB Lesbian/Gay/Bisexual
LGB Long Beach CA
LGBO Lesbian/Gay/Bisexual and any others we've missed, "LGBO*"
LGM Little Green Men
LHD Litterarum Humaniorum Doctor (doctor of human letters)
LH Left Hand
LH Liquid Hydrogen (also LH2 or LHX)
LH Lower Half
LH Luteinizing Hormone (same as ISCH)
LHS Left Hand Side
LIDAR LIght Detection And Ranging
LIFIA Laboratoire d'Informatique Fondamentale et d'Intelligence Artificielle
LIFO Last In, First Out
LI Long Island
LIM Lotus-Intel-Microsoft (memory specification)
LIMM Lotus Intel Microsoft Memory (PC world)
LIMS Labor-Informations-Management-System
LINC Laboratory INstrument Computer
LIPS Logical Inferences Per Second
LISA Large Installation System Administration
LIS Lanthanide-Induced Shift
LISP LISt Processing Language
LIST List-Oriented Interactive Language
LIU Line Interface Unit
LJBF Let's Just Be Friends
LLAMA Logic Lacking A Meaningful Acronym
LLB Legum Baccalaureus (bachelor of laws)
LLCLINK Layer Control Protocol (?), "LLCLink"
LLC Logical Link Control
LLD Leather Lifestyle Dork(s)
LLD Legum doctor (doctor of laws)
LL Late Latin
LL Long Lines [telephony]
LLN Line Link Network [telephony]
LLNL Lawrence-Livermore National Laboratory
LLO Low Lunar Orbit [Space]
LLOX Lunar Liquid OXygen [Space]
LLP Line Link Pulsing [telephony]
LMAO Laughing My Ass Off
LMFAO Laughing My F***ing Ass Off
LMC Large Magellanic Cloud (see SMC)
LME Layer Management Entity
LMF License Management Facility
LMK Let Me Know
LM Lan Manager
LM Life Master (Contract Bridge ranking)
LM Lunar Module (a.k.a. LEM) (Apollo spacecraft)
LMMS Local Message Metering System
LMOS Line Maintenance Operations System [telephony, AT&T]
LMSO Laughing My Socks Off
LN2 Liquid N2 (Nitrogen)
LNG Liquified Natural Gas
LOA Lands of Adventure
LOA Leave Of Absence
LOB Line Of Balance
LOB Line Of Building
LOCAP LOw CAPacitance
LOC Lines Of Code
LOC Local Operating Company
LOE Level Of Effort
LOF Lock OFf-line
LOFT Launch Operations Flight Test [Space]
LOI Letter Of Intent
LO Lake Oswego
LO Leverage Out
LOL Laughing Out Loud
LON Lock ON-line
LOOPS Lisp Object Oriented Programming System
LOP Lines Of Position
LORAN Long RANge Navigation
LOSF Lunar Orbit Staging Facility [Space]
LOS Line Of Sight
LOS Los Angeles
LOTS Low Overhead Timesharing System
LOX Liquid OXygen
LPCDF Low Profile Combined Distributing Frame
LPC Linear Predictive Coding (speech processing)
LPDA Link Problem Determination Aid
LPF League for Programming Freedom
LPG Liquified Petroleum Gas
LPG Low Pressure Gas
LP Linear Prediction
LP Linear Programming
LPL Lunar Personnel Lander [NASA OEXP]
LP Long Play(ing) (record)
LP Low Pressure
LPN Licensed Practical Nurse
LPP Licensed Program Products
LPR Line PrinteR
LPT Line PrinTer
LPT Lunar Propellant Tanker [NASA OEXP]
LPV Lunar Piloted Vehicle [NASA OEXP]
LQ Letter Quality
LRAP Long Route Analysis Program
LRB Liquid Rocket Booster [Space]
LRBM Long Range Ballistic Missile
LRC Longitudinal Redundancy Character
LRS Line Repeater Station
LRSP Long Range System Plan
LRSS Long Range Switching Studies
LRU Least Recently Used
LRU Line Replaceable Unit
LSAP Long Service Access Point
LSB Least Significant Bit; Least Significant Byte
LSB Lower Side Band
LSC Lecture Series Committee [MIT]
LSC LightSpeed C
LSD Least Significant Digit
LSD LySergic acid Diethylamide
LSD pounds (Libra), shillings (Sestertii), and (old) pence (Denarii)
LSELLINK Layer Selector (?), "LSELLink"
LSI Large Scale Integration
LS Left Side
LS Letter Signed
LS Locus Sigilli (place of seal)
LSP LightSpeed Pascal
LSR Local Standard of Rest
LSRP Local Switching Replacement Planning system
LSSD Level-Sensitive Scan Detection
LSS Life Support System
LSS Loop Switching System
LSV Line Status Verifier
LTAB Line Test Access Bus
LTA Lighter Than Air
LTC Lieutenant Colonel
LTC Local Test Cabinet
LTD Local Test Desk
LTF Lightwave Terminating Frame
LTF Line Trunk Frame
LTG Line Trunk Group
LTJG Lieutenant Junior Grade
LTL Less than Truckload Lot
LT Long Ton
LT Low Tension
LTMS Laughing To MySelf
LTNS Long Time No See
LTPD Lot Tolerance Percent Deffective
LTP Lunar Transient Phenomenon
LTR Long Distance Relationship
LTR Long Term Relationship
LTS Loss Test Set
LTV Loan To Value
LTVR LTV Ratio
LUG Local Users Group
LU Logical Unit
LUMO Lowest Unoccupied Molecular Orbital
LUN Logical Unit Number
LUT Look-Up Table
LWM Low-Water Mark
LWP Light Weight Process
LWSP Linear White-SPace
LWT Last Will and Testament
LXE Lightguide eXpress Entry
LZ Landing Zone
MAAP Maintenance And Administration Panel
MAC Apple MACintosh computer
MACBS Multi-Access Cable Billing System
MAC Mandatory Access Control
MAC Media Access Control
MAC Military Air Command
MAC Move, Add, Change
MAC Multiple Analogue Component
MACSYMA project MAC's SYmbolic MAnipulation System
MADD Mothers Against Drunk Driving
MAD Mass Air Delivery
MAD Mutual Assured Destruction
MADN Multiple Access Directory Numbers
MAF Marine Abkuerzungs Fimmel (roughly navy abbreviation spleen?)
MAG Magazine
MAJOUR Modular Application for JOURnals
MA Maintenance Administrator
MA Massachusetts [US state postal designation]
MAN Metropolitan Area Network
MAP Maintenance and Administration Position
MAP Management Assesment Program
MAP Manufacturing Automation Protocol (GM's Token-Passing "Ethernet")
MAP Marketing Assistance Program
MAPSS Maintenance & Analysis Plan for Special Services
MAPTOP Manufacturing Automation Protocol/Technical Office Protocol, "MAP/TOP"
MARBI MAchine Readable form of Bibliographic Information
MARC MAchine Readable card Catalog
MARC Market Analysis of Revenue and Customers system
MAR Microprogram Address Register
MARS Multiuser Archival and Retrieval System
MASB MAS Bus
MASC MAS Controller
MASC Multiple Award Schedule Contract
MASER Microwave Amplification by Stimulated Emission of Radiation
MASH Mobile Army Surgical Hospital
MAS Magic Angle Spinning
MAS MAin Store
MAS Mass Announcement System
MASM MAS Memory
MAST Multi-Application SOnar Trainer
MATCALS Marine Air Traffic-Control And Landing System, "MAT-CALS"
MATFAP Metropolitan Area Transmission Facility Analysys Program
MAU Math Acceleration Unit
MAU Media Access Unit
MAU Medium Attachment Unit
MAU Multiple Access Unit
MAU Multistation Access Unit
MAXI Modular Architecture for the Exchange of Information (DoD)
MBA Management Business Analyst
MBA Master Business Administration
MBBA p-MethoxyBenzylidene-p-n-ButylAniline
MB Manned Base
MB MegaByte (1MB=1048576 bytes)
MBO Management By Objectives
MBPS MegaBits/Bytes Per Second
MBWA Management By Walking Around
MCAD Mechanical Computer Aided Design
MCAE Mechanical Computer Aided Engineering
MCA Mechanical Computer Aided Design
MCA Micro Channel Architecture
MCC Master Control Center
MCC Master Control Console
MCC Microelectronics & Computer Consortia (Austin based)
MCC Mission Control Center
MCCS Mechanized Calling Card Service
MCHB Maintenance CHannel Buffer
MCH Maintenance CHannel
MCIAS Multi-Channel Intelligent/Intercept Announcement System
MCI Media Control Interface
MCI Microwave Communications Incorporated
MC Management Committee
MC Master of Ceremonies
MC Material Control
MCNC Microelectronics Center of North Carolina
MCN Metropolitan Campus Network
MCPAS Master Control Program/Advanced System, "MCP/AS"
MCP Master Control Program
MCP Multiport/Multiprotocol Communication Processor
MCPO Master Chief Petty Officer
MCR Memory ContRoller
MCS Material Control System
MCS Meeting Communications Service
MCSV Mars Crew Sortie Vehicle [NASA OEXP]
MCTRAP Mechanized Customer Trouble Report Analysis Plan
MCU Microprocessor Control Unit
MDACS Modular Digital Access Control System
MDAS Magnetic Drum Auxiliary Sender
MDC Marker Distributor Control
MDC Meridian Digital Centrex
MD Doctor of Medicine
MDDS Media Documentation Distribution Set
MDE Modular Design Environment
MDF Main Distribution Frame [telephony]
MDI Medium Dependent Interface
MDI Multiple Document Interface
MDL Molecular Design Ltd. [Corporate name]
MD Management Domain
MD Maryland [US state postal designation]
MD Medical Doctor
MD Months after Date
MDQS Multi-Device Queueing System
MDRE Mass Driver Reaction Engine [Space]
MDS Multi-point Distribution Service
MDT Mean Down Time
MDU Marker Decoder Unit
MDX Modular Digital eXchange
MEA Minimum Enroute Altitude (IFR)
MEC Mobile Equipment Console
MECO Main Engine CutOff
MED Master of EDucation, "MEd"
MELD Mechanized Engineering and Layout for Distributing frames
MEM 2-MethoxyEthoxyMethyl
ME Maine
ME Mechanical Engineer
MEM Maximum Entropy Method
M.E. myalgic encephalomyelitis
MERP Middle-Earth Role Playing
MERS Most Economic Route Selection
MET Mid European Time
MET Multibutton Electronic Telephone
MeV Million Electron Volts
MFA Master Fine Arts
MFB Monochrome Frame Buffer
MFENET Magnetic Fusion Energy NETwork
MFG Manufacturing
MFJ Modification of Final Judgement
MFLOPS Million FLoating-point OPerations per Second
MF Medium Frequency (300-3000KHz)
MF Middle French
MFM Modified Frequency Modulation
MF Multi-Frequency [telephony]
MFR Multi-Frequency Receivers
MFS Macintosh File System
MFT Metallic Facility Terminal
MFT Multiprogramming with a Fixed number of Tasks
MGH Massachusetts General Hospital
MG Machine Gun
MG Major General
MG MasterGroup
MG Military Government
MGM Metro-Goldwyn Mayer [Corporate name]
MGT MasterGroup Translator
MGUFI My Gosh U Freaking/Fucking Idiot
MHD MagnetoHydroDynamics
MHL Microprocessor Host Loader
MHS Message Handling System (aka X.400)
MHz MegaHertZ (unit of frequency, 1,000,000 cycles per second)
MIA Missing In Action
MIB Management Information Base
MICE Modular Integrated Communications Environment
MICR Magnetic Ink Character Recognition
MIDI Musical Instrument Digital Interface
MIFASS Marine Integrated Fire And Support System
MIF Maker Interchange Format
MIL Military
MILNET MILitary NETwork
MILSTD MILitary StandarD, "MIL-STD"
MIMD Multiple Instruction, Multiple Data
MIME Multipurpose Internet Mail Extensions
MI Michigan
MI Military Intelligence
MIM Media Interface Module
MIM Metal Insulator Metal
MIM Morality In Media
MI Mode Indicator
MINCE MINCE Is Not Complete Emacs
MINDO Modified Intermediate Neglect of Differential Overlap
MIN Mobile Identification Number
MINX Multimedia Information Network eXchange
MIP Mortgage Insurance Premium
MIPS Microprocessor without Interlocked Piped Stages
MIPS Million Instructions Per Second
MIPS Million of Instructions Per Second
MIR Micro-Instruction Register
MIR Peace, "mir" [Russian]
MIRS Management Information Retrival System
MIRV Multiple Independently-Targetable Reentry Vehicle
MISCF MISCellaneous Frame
MIS Management Information System
MITI Ministry of International Trade and Industry
MIT Massachusetts Institute of Technology
MITS Microcomputer Interactive Test System
MJ Modular Jack
MKTG Marketing
MLA Member of Legislative Assembly (see MPP)
MLCD Multi-Line Call Detail
MLC MiniLine Card
MLD Minimum Lethal Dose
MLEM Multi Language Environment
MLL Mars Logistics Lander [NASA OEXP]
ML Middle Latin
MLO Material, Labor, Overhead - Inventoriable Cost / Full Cost
MLS Microwave Landing System
MLS MultiLevel Security
MLS Multiple Listing Service
MLT Mechanized Loop Testing
MLV Medium Lift Vehicle [NASA OEXP]
MMC Minicomputer Maintenance Center
MMC Money Market Certificate
MMDF Multi-channel Memo Distribution Facility
MMES Martin Marietta Energy Systems
MMFS Manufacturing Message Format Standard
MMGT MultiMasterGroup Translator
MMH MonoMethyl Hydrazine
M Miniatures
MMJ Modified Modular Jack
MM Maryknoll Missioners
MMOC Minicomputer Maintenance Operations Center
MMP Modified Modular Plug
MMS Main Memory Status
MMS Manufacturing Message Specification
MMS Memory Management System
MMT Multiple Mirror Telescope
MMU Manned Maneuvering Unit [Space]
MMU Memory Management Unit
MMW Multi-Mega Watt [Space]
MMX Mastergroup MultipleX
MNA Member of National Assembly (Quebec)
MNDO Modified Neglect of Diatomic (differential) Overlap
MN Minnesota
MNOS Metal-Nitride-Oxide Semiconductor
MNP Microcom Networking Protocol
MNRAS Monthly Notices of the Royal Astronomical Society
MOA Military Operations Area
MOCA Minimum Obstacle Clearance Altitude (IFR)
MOC Mars Observer Camera (on Mars Observer)
MODEM MOdulator-DEModulator
MOD Magneto-Optical Disk
MOD Mesio Occlusal Distal (dental filling)
MOFW Men Of Few Words
MOG Minicomputer Operations Group
MOLA Mars Observer Laser Altimeter (on Mars Observer)
MOL Manned Orbiting Laboratory
MO Magneto-Optical
MO Mail Order
MOMA Museum Of Modern Art
MO Medical Officer
MO Missouri
MOM MethOxyMethyl
MO Modus Operandi
MO Molecular Orbital
MO Money Order
MOMV Manned Orbital Maneuvering Vehicle [Space]
MOPAC Molecular Orbital PACkage
MOP Maintenance Operations Protocol (DEC)
MOR Middle-Of-the-Road
MOSFET Metal Oxide Semiconductor Field Effect Transistor
MOS Metal Oxide Semiconductor
MOTAS Member of the Appropriate Sex
MOTD Message Of The Day
MOTIS Message-Oriented Text Interchange System
MOTOPS Member of the Oppositely-Plumbed Sex
MOTOS Member of the Opposite Sex
MOTSS Member of the Same Sex
MOTV Manned Orbital Transfer Vehicle [Space]
MOU Memorandum Of Understanding
MOUSE Minimum Orbital Unmanned Satellite of Earth
MOV Metal Oxide Varistor
MPCC Microprocessor Common Control
MPCH Main Parallel CHannel
MPC Minor Planets Circular
MPC Multiprocess Communications
MPD Multiple Personality Disorder
MPDU Message Protocol Data Unit
MPE Mission to Planet Earth [Space]
MPG Miles Per Gallon
MPH Miles Per Hour
MPIF Multiprocessor Interface
MP Manifold Pressure
MP Melting Point
MP Member of Parliament
MP Metal Particle
MP Metropolitan Police
MP Micro Processor
MP Military Police(man)
MP Mixed Projection
MP Modular Plug
MP MultiProcessing
MP MultiProcessor
MPO Manufacturer's Point of Origin
MPOW Multiple Purpose Operator Workstation
MPPD Multi-Purpose Peripheral Device
MPP Member of Provincial Parliament (Canada; also MLA)
MPP Message Posting Protocol
MPP Message Processing Program
MPP MicroProcessor Pascal
MPR Mars Pressurized Rover [Space]
MPS Master Production Schedule
MPS Megabytes Per Second
MPT Ministry of Posts and Telecommunications
MPT MultiPort Transceiver
MPU MicroProcessor Unit
MPV Mars Piloted Vehicle [NASA OEXP]
MPW Macintosh Programmer's Workshop
MQC Multiple-Quantum Coherence
MQF Multiple-Quantum Filter
MRD Marketing Requirements Document
MRFL Mandatory File and Record Locking
MRF Maintenance Reset Function
MRI Magnetic Resonance Imaging
MR Miniatures Rules
MRP Manufacturing Requirements Planning
MRP Manufacturing Resource Planning
MRP Material Resource Planning
MRS Material Reject Stock
MRS Material Requirements Schedule
MRSR Mars Rover and Sample Return
MRSRM Mars Rover and Sample Return Mission
MRTS Modification Request Tracking System
MRU Most Recently Used
MSB Most Significant Bit; Most Significant Byte
MSCDEX MicroSoft CD-rom EXtensions
MSC Media Stimulated Calling
MSC MicroSoft C
MSCP Mass Storage Control Protocol
MSD Most Significant Digit
MSDOS MicroSoft DOS, "MS-DOS", Maybe SomeDay an Operating System
MSE Mobile Subscriber Equipment
MSFC (George C.) Marshall Space Flight Center [NASA]
MSFR Minimum Security Functionality Requirements
MSG MonoSodium Glutamate
MSH Marvel Super Heroes
MSI Medium Scale Integration
MSL Mean Sea Level
MSL Motor Simulation Laboratory
MS Maintenance State
MS ManuScript
MS Mass Spectrometry
MS Master of Science
MS MicroSoft [Corporate name]
MS Military Science
MS MilliSecond
MS Motor Ship
MS Multiple Sclerosis
MSN Manhattan Street Network, mesh architecture - wavelength-division mux
MSN Manufacturing Sequence Number
MSO Manufacturers Statement of Ownership
MSPE Mercenaries, Spies & Private Eyes
MSP Mass Storage Pedestal
MSR Mess-, Steuer- und Regelungssysteme
MSR Multitrack Serpentine Recording
MSS Management Support System
MSS ManuScriptS
MSS Mass Storage Subsystem
MSS Mass Storage System
MSS Maximum Segment Size
MST Mountain Standard Time
MTA Mail Transfer Agent
MTA Message Transfer Agent
MTA Message Transfer Architecture (AT&T)
MTA Metropolitan Transportation Authority
MTBF Mean Time Between Failures
MTBRP Mean-Time-Between-Parts-Replacement
MTC Man Tended Capability
MTD Month To Date
MTFBWY May The Force Be With You
MTF Male to Female (transgendered)
MTF Master Test Frame
MTF Modulation Transfer Function
MTF More To Follow
MTI Multi-Terminal Interface
MT Material Transfer
MT Metric Ton
MTM Method Time Measurements
MT Mountain Time
MTP Message Transfer Part
MTR Magnetic Tape Recording
MTR Mechanized Time Reporting
MTS Message Telecommunications Service
MTS Message Telephone Service
MTS Mobile Telephone Service
MTSO Mobile Telephone Switching Office [telephony]
MTTFF Mean Time To First Failure
MTTF Mean Time To Failure
MTTR Mean Time to Recovery/Repair
MTTR Mean Time Trouble Repair
MTU Maintenance Termination Unit
MTU Maximum Transer Unit
MTU Maximum Transmission Unit
MTU Media Tech Unit
MTV Music TeleVision
MTX Mobile Telephone eXchange
MUA Mail User Agent
MUF Maximum Usable Frequency (max freq during sunspot activity)
MULDEM MULtiplexer-DEMultiplexer
MULTICS MULTiplexed Information and Computing Service
MU Message Unit
MUMPS Massachusetts general hospital Utility MultiProgramming System
mung Mash Until No Good
MUNG Mung Until No Good (see the hacker's dictionary)
MUX MUltipleXor
MVA Market Value Adjustment
MVA MegaVolt Ampere
MV MicroVAX
MVP Multiline Variety Package
MVS Multiple Virtual Storage
MVSSP Multiple Virtual Storage / System Product, "MVS/SP"
MVSXA Multiple Virtual Storage / Extended Architecture, "MVS/XA"
MVY Martha's Vineyard MA
MW MicroWave, "M/W"
MWM Motif Window Manager
MW MultiWink
MX Mail eXchange
MX Missile eXperimental
MXU MultipleXer Unit
MYOB Mind Your Own Business
NAACP National Association for the Advancement of Colored People
NAAFA National Association to Advance Fat Acceptance
NAAS North American Automated Systems co.
NABISCO NAtional BIScuit COmpany [Corporate name]
NAB National Association of Broadcasters
NACA National Advisory Committee on Aeronautics (became NASA)
NAC Network Administration Center
NACS National Advisory Committee on Semiconductors
NADGE NATO Air Defense Ground Environment
NAD Network Access Device
NAD Nicotinamide Adenine Dinucleotide
NAGE National Association of Government Employees
NAG Network Architecture Group
NAG Numerical Algorithms Group
NAK Negative AcKnowledgement
NAMM North American Music Merchants
NAM Name and Address Module [telephony, cellular phone changeable ROM]
NAM National Account Manager [telephony, AT&T specific?]
NAM Number Assignment Module [telephony, cellular phone changeable ROM]
NA Narcotics Anonymous
NAND Not-AND gate
NA Next Address
NAN Not A Number
NA North America
NA Not Applicable
NA Not Available
NANP North American Numbering Plan
NAPAP National Acid Precipitation Assessment Program
NAPLPS North American Presentation Layer Protocol Suite
NARDAC NAvy Regional Data Automation Center
NAR National Association of Realtors
NAR Nuclear Acoustic Resonance
NASAGSFC National Aeronautics and Space Administration Goddard Space Flight Center, "NASA/GSFC"
NASA National Aeronautics and Space Administration
NASCAR National Association of Stock Car Auto Racing
NASDA National Space Development Agency [Japan]
NASDAQ National Association of Security Dealers Automated Quotations
NASM National Air and Space Museum
NAS National Academy of Sciences
NAS National Advanced Systems
NAS National Aircraft (Aerospace) Standards
NAS National Audubon Society
NAS Network Application Support
NAS Numerical Aerodynamic Simulation
NAS Numerical and Atmospheric Sciences network
NASP National AeroSpace Plane
NATO North Atlantic Treaty Organization
NAU Network Addressable Unit
NAVDAC NAVal Data Automation Command
NAVSWC NAV Surface Warfare/Weapons Center
NBA National Basketball Association
NBC National Broadcasting Company
NBD Network Block Device (Linux)
NBD Next Business Day
NBD No Big Deal
NBFM NarrowBand Frequency Modulation
NB New Brunswick
NB Nota Bene
NBO Network Build Out
NBO Network Business Opportunity
NBP Name Binding Protocol
NBS National Bureau of Standards (renamed NIST) [U.S. Government]
NBVM Narrow Band Voice Modulation
NCA Network Control Analysis
NCAR National Center for Atmospheric Research
NCCF Network Communications Control Facility
NCC National Computer Conference
NCC Network Control Center
NCDC National Climatic Data Center
NCD Network Computing Devices
NCE New Catholic Edition
NCGA National Computer Graphics Association
NCIC National Cartographic Information Center
NCIC National Crime Information Center
NCMOS N-Channel (Silicon Gate Reversed) CMOS
NC Network Control
NC No Charge
NC No Connection
NC Non-Consensual
NC North Carolina
NCO Non-Commissioned Officer
NCP Network Control Program/Protocol/Point
NCR National Cash Register [Corporate name]
NCSA National Center for Supercomputing Applications
NCSC National Computer Security Center
NCSL National Computer Systems Laboratory (NIST)
NCS National Computer/Communications Systems
NCS Network Computing System
NCTE Network Channel-Terminating Equipment
NCTL National Computer and Telecommunications Laboratory
NCV No Commercial Value
NDA Non-Disclosure Agreement
NDB Non-Directional Beacon
NDCC Network Data Collection Center
NDC Normalized Device Coordinates
NDDL Neutral Data Definition Language
NDDO Neglect of Diatomic Differential Overlap
NDEA National Defense Education Act
NDE NeWS Development Environment
NDI Network Design & Installation (Sun Service), "ND&I"
NDIS Network Driver Interface Specification
NDL Logical Network Disk
NDL Network Database Language
ND Network Disk (Sun)
ND No Date
ND North Dakota
NDP New Democratic Party (Canada)
NDSL National Direct Student Loan
NDT Newfoundland Daylight Time
NDV NASP Derived Vehicle
NEAR National Electronic Accounting and Reporting system
NEARNET New England Academic and Research network, "NEARnet"
NEB New English Bible
NEBS New Equipment-Building System
NEC National Electric Code
NEC National Electric Conference
NEC Nippon Electric Company [Corporate name]
NEFS Network extensible File System, "NeFS"
NEI Not Elsewhere Included
NEMA National Electrical Manufacturers Association
NEMP Nuclear ElectroMagnetic Pulse
NE New England
NE Non Exempt
NE North East
NESAC National Electronic Switching Assistance Center
NESC National Energy Software Center
NES National Energy Strategy
NES Not Elsewhere Specified
NETBEUI NETBIOS Extended User Interface
NETBIOS NETwork Basic Input Output System
NETBLT NETwork Block Transfer
NETCDF NETwork Common Data Format
NET National Educational Television
NET NETwork
NET New England Telephone
NEWS Networked Extensible Windowing System, "NeWS"
NEWT NeWS Terminal, "NeWT"
NEXRAD NEXt generation weather RADar
NEXT Near-End cross-Talk
NFC National Football Conference
NFC No Fucking Clue
NFFE National Federation of Federal Employees
NFI no fucking idea
NFL National Football League
NF No Funds
NFPA National Fire Protection Association
NFR Not a Functional Requirement
NFR Not Flame Related
NFS Network File System
NFT Network File Transfer
NGC New General Catalog
NG National Guard
NG News Group / No Good
NG No Good
NHI National Health Insurance
NHLBI National Heart, Lung, and Blood Institute (Bethesda, MD)
NHL National Hockey League (the nation is Canada)
NH New Hampshire
NHR Non Hierarchial Routing
NICE Network Information and Control Exchange (DECNET)
NICMOS Near Infrared Camera / Multi Object Spectrometer (HST upgrade)
NIC Network Information Center (ARPAnet)
NIC Network Interface Card
NIFTP (a file transfer network in the UK)
NIH National Institutes of Health
NIH Not Invented Here
NIMBY Not In My Back Yard
NIMBY Not In My Back Yard
NIMH National Institute of Mental Health (Rockville, MD)
NIM Nuclear Instrumentation Module (an electronic instr. standard)
NIMS Near-Infrared Mapping Spectrometer (on Galileo)
NI Network Interface
NIR Near InfraRed
NIR Network Information Registry
NISC Network Information and Support Center (NYSERNet)
NISDN narrowband integrated-services digital network, "N_ISDN"
NIS Network Information Service (nee YP)
NISO National Information Standards Organization
NISS National Information on Software and Services
NIST National Institute of Standards and Technology (formerly NBS)
NIU Network Interface Unit
NJ New Jersey
NKS Network Knowledge Server
NLA National Leather Association
NLDP National Launch Development Program
NLM National Library of Medicine
NL National League (baseball)
NL New Leather
NLP Natural Language Processing
NLQ Near Letter Quality
NLRB National Labor Relations Board
NLS Native Language Support
NLS Network License Server
NMA Network Management Architecture
NMC Network Management Center
NMI New Model Introduction
NMI Non Maskable Interrupt
NM Nautical Mile
NM Network Module
NM Never Mind
NM New Mexico
NM No Mark; Not Marked
NM Not Much
NMOS N channel Metal Oxide Semiconductor (N-MOS) (see MOS)
NMR Nuclear Magnetic Resonance
NMS Network Management Station
NNE North North East
N North
N Notice
NNTP Net News Transfer Protocol
NNTP Network News Transfer Protocol
NNW North North West
NNX Network Numbering eXchange
NOAA National Oceanic and Atmospheric Administration
NOAO National Optical Astronomy Observatories
NOC Network Operations Center
NOCS Network Operations Center System
NOE Nuclear Overhauser Effect
NOESY Nuclear Overhauser and Exchange SpectroscopY
NOP No OPeration
NORAD NORth American Defense command
NORDO No-radio
NORGEN Network Operations Report GENerator
NORML National Organization for the Reform of Marijuana Laws
NOSC Naval Ocean Systems Center
NOS Network Operating System
NOS Not Otherwise Specified
!= Not equal to
NOTIS Network Operator Trouble Information System
NPA No Power Alarm
NPA Numbering Plan Area, or area code [Telephony]
NPC Non-Player Character (see PC)
NPG New Product Group
NPI New Product Introduction
NPL National Physical Laboratory (UK)
NPL Non-Procedural Language
NPMS Named Pipes/Mail Slots
NPN Negative-Positive-Negative (transistor)
NPN NonProtein Nitrogen
NP Nondeterministic-Polynomial
NP No Problem
NP No Protest
NP Notary Public
NP Noun Phrase
NPP Net Primary Productivity
NPRM Notice of Proposed Rulemaking
NPR National Public Radio
NPSI Network Protocol Service Interface
NPV Net Present Value
NQ No Quote
NQS Network Queuing System
NRA National Rifle Association
NRAO National Radio Astronomy Observatory
NRC National Research Council
NRC Nuclear Regulatory Commission
NRDC Natural Resource Defense Council
NRE New Relationship Excitement\Ecstasy
NREN National Research and Education Network
NRE Non-Recurring Engineering
NRL Naval Research Labs
NRM Normal Response Mode
NRN No Reply Necessary
NROFF New ROFF
NRO National Reconnaissance Office
NRZI Non-Return to Zero Inverted (magnetic tape, 800 bpi)
NRZ Non-Return to Zero
NSA National Security Agency [U.S. Government]
NSAP Network Service Access Point
NSC National Security Council [U.S. Government]
NSC Network Service Center
NSCS Network Service Center System
NSDSSO NASA Science Data Systems Standards Office
NSEC Network Switching Engineering Center
NSEL Network Service Selector
NSEM Network Software Environment
NSE Network Software Environment
NSF National Science Foundation [U.S. Government]
NSFNET National Science Foundation NETwork
NS Name Server
NS Network Services
NS Neutron Star
NS Not Specified
NS Nova Scotia
NS Nuclear Ship
NSO National Solar Observatory
NSPMP Network Switching Performance Measurement Plan
NSP Network Services Protocol (DECNET)
NSSDC National Space Science Data Center
NST Newfoundland Standard Time
NSTS National Space Transportation System [Space]
NSUG Nihon Sun User's Group
NSU Networking Support Utilities
NSWC Naval Surface Warfare/Weapons (obsolete) Center
NSW New South Wales (Australia)
NTEC Network Technical Equipment Center
NTEU National Treasury Employees Union
NTF No Trouble Found
NTFS Windows NT File System
NTIA National Telecommunications and Information Agency
NTIS National Technical Information Service
NT Network Termination
NT Newfoundland Time
NT New Technology
NT New Testament
NTN Neutralized Twisted Nematic
NT Northern Telecom
NT Northern Territory
NTO Network Terminal Option
NTP Network Time Protocol
NTP Normal Temperature and Pressure (see STP)
NTR Nuclear Thermal Rocket(ry)
NTSB National Transportation Safety Board [U.S. Government]
NTSC National Television Standards Committee; Never The Same Color
NTS Network Technical Support
NTS Network Test System
NTT New Technology Telescope
NTT Nippon Telephone & Telegraph
NUA Network User Address
NUI Network User Identification
NU Name Unknown
NURBS NonUniform Rational B-Spline
NUSC Naval Underwater Systems Command
NVH Noise, Vibration, Harshness
NVLAP National Validation Laboratory Program
NV Nevada
NVRAM NonVolatile Random Access Memory
NWA Northwest Airline
NW North West
NWS National Weather Service
NWT North West Territories (Australia)
NXX NANP syntax for a three-digit string, {[2-9],[0-9],[0-9]} [Telephony]
NYC New York City
NY New York
NYNEX New York, New England and the unknown (X)
NYSE New York Stock Exchange
NYSERNET New York State Educational and Research Network, "NYSERNet"
NZ New Zealand
NZUSUGI New Zealand Unix System User Group, Inc.
O2 Oxygen
OACIS Oregon Advanced Computing InStitute
OAK Oakland CA
OA Office Automation
OAO Orbiting Astronomical Observatory
OA Order Administration
OA Overeaters Anonymous
OAS Organization of American States
OASYS Office Automation SYStem
OAT Outside Air Temperature
OATS Office Automation Technology and Services
OBD Online Bugs Database (Sun)
OBE Order of the British Empire
OB Obligatory
OBO Or Best Offer
OBS Omnibearing Selector
OBS Omni Bearing Selector
OCATE Oregon Center for Advanced Technology Education
OCC Office Communications Cabinet
OCC Other Common Carrier
OCDM Office of Civil Defense and Mobilization
OCE Other Common carrier channel Equipment
OCI Out of City Indicator
OCLC Online Computer Library Center (Ohio College Library Catalog)
OCLI Optical Coating Labs Inc.
OCO Object Code Only
OC Operator Centralization
OC Order of Canada
OCR Optical Character Reader
OCR Optical Character Recognition
OCS Officer Candidate School
OCST Office of Commercial Space Transportation
OCU Office Channel Unit
ODAC Operations Distribution Administration Center
ODA Office Document Architecture
ODDD Operator Direct Distance Dialing
OD Doctor of Optometry
ODD Operator Distance Dialing
ODIF Office Document Interchange Format
ODI Optical Digital Image
ODISS Optical Digital Image Storage System
ODMR Optically Detected Magnetic Resonance
OD Oculus Dexter (right eye)
OD Officer of the Day
OD Outer Diameter
OD OverDose
ODP Open Distributed Processing
ODS Overhead Data Stream
OECD Organization for Economic Cooperation and Development
OED Oxford English Dictionary
OEM Original Equipment Manufacturer
OE Old English
OEO Office of Economic Opportunity
OE Order Entry
OES Order of the Eastern Star
OEXP Office of Exploration [NASA]
OFM Order of Friars Minor
OFNPS Outstate Facility Network Planning System
OF Old French
OFS Order of Free State
OGICSE Oregon Graduate Institute Computer Science and Engineering
OGI Oregon Graduate Institute
OGL Old Guard Leather
OG Original Gum
OGT OutGoing Trunk
OH Ohio
OH OverHead
OHP OverHead Projector
OIC Oh, I See
OIRA Office of Information and Regulatory Affairs
OIU Office Interface Unit
OIW Workshop for Implementors of OSI
OJT On-the-Job Training
OLE Object Linking and Embedding
OLIT Open Look Interface Toolkit
OL Old Leather
OLTM Optical Line Terminating Multiplexer, "O-LTM"
OLTP OnLine Transaction Processing
OLWM OpenLook Window Manager
OMA Optical Multichannel Analyzer
OMB Office of Management and Budget
OMD Orchestral Manouevers in the Dark
OME Oregon Microcomputer Engineering (Intel)
OMFG Oh My F***ing God/Goodness/Gosh
OMG Oh My Goodness/Gosh/God
OMM Output Message Manual
OM Office Management
OMPF Operation and Maintenance Processor Frame
OMS Orbital Maneuvering System
OMV Orbital Maneuvering Vehicle [Space]
ONAC Operations Network Administration Center
ONAL Off Network Access Line
ONA Open Network Architecture
ONC Open Network Computing
ONE Open Network Environment
ONI Office of Naval Intelligence
ONI Operator Number Identification [telephony]
ON Old Norse
ONP Optical Nuclear Polarization
ONR Office of Naval Research
OOB Out Of Band
OOC Out of Character / Curiosity
OODB Object Oriented Data Base
OOI Out Of Interest
OOL Out Of Luck
OO Object Oriented
OOPART Out Of Place ARTifact
OOPL Object-Oriented Programming Language
OOP Object-Oriented Programming
OOPS Object-Oriented Programming System
OOPS Object Oriented Program Support
OOPSTAD Object Oriented Programming for Smalltalk Application Developers Association
OOSH Object-Oriented SHell
OOT Object-Oriented Technology
OPC Originating Point Codes
OPDU Operation Protocol Data Units
OPEC Organization of Petroleum Exporting Countries
OPEOS Outside Plant planning, Engineering & construction Operations Sys
OPF Orbiter Processing Facility
OPM Office of Personnel Management
OPM Outside Plant Module
OP Observation Post
OP OfficePower office automation system, trademark of CCI
OP OFFICEPOWER office automation system, trademark of CCI
OP Order of Preachers
OP Out of Print
OP Outside Plant
OPSM Outside Plant Subscriber Module
OPS Off-Premises Station
OPX Off-Premises eXtension
ORB Office Repeater Bay
ORDLIX Organized Design for Line and Crew System
ORD Optical Rotatory Dispersion
ORFEUS Orbiting and Retrievable Far and Extreme Ultraviolet Spectrometer
ORM Optical Remote Module
ORNAME Originator / Recipient Name, "ORname"
ORNL Oak Ridge National Laboratory
OROM Optical Read Only Memory
OR Operating Room
OR Operation Research
OR Oregon
OR Originating Register
OR Owner's Risk, Own Risk
ORT Ongoing Reliability Test
OS2 Operating System/2, "OS/2"
OSAC Operator Services Assistance Center
OSB Order of St. Benedict
OSCAR Orbiting Satellite Carrying Amateur Radio
OSC Operator Services Center
OSC Orbital Sciences Corporation [Space]
OSC OSCillator
OSCRL Operating System Command Response Language
OSDIT Office of Software Development and Information Technology
OSD Office of the Secretary of Defense
OSDS Operating System for Distributed Switching
OSE Open Software Environment
OSF Open Software Foundation (Oppose Sun Forever)
OSF Order of St. Francis
OSHA Occupational Safety and Health Act
OSINET Open Systems Interconnection Network
OSI Open Systems Interconnection
OSIRM Open Systems Interconnection/Reference Model, "OSI/RM"
OSME Open Systems Message Exchange
OSN Office Systems Node
OSN Open Systems Network
OS Oculus Sinister (left eye)
OSO Originating Signaling Office
OS Operating System
OS Operator Service
OS Ordinary Seaman
OS Out of Stock
OS OutState
OSPF Open Shortest Path First
OSP Optical Storage Processor
OSP OutSide Plant
OSPS Operator Service Position System
OSSA Office of Space Science and Applications
OSSE Oriented Scintillation Spectrometer Experiment (on GRO)
OSS Office of Strategic Services (later CIA)
OSS Office Support System
OSS Operation Support System [telephony, AT&T?]
OSS Operator Service System
OSTP Office of Science and Technology Policy [White House]
OTA Office of Technology Assessment [U.S. government]
OTA Optical Telescope Assembly (on HST)
OTBE OverTaken By Events
OTB Off-Track Betting
OTBS One True Bracketing Style
OTC Output Technology Corporation
OTC Over The Counter (stocks)
OTDR Optical TDR
OTEC Ocean Thermal Energy Conversion
OTF Open Token Foundation
OTHB Over The Horizon - Backscatter (as in radar), "OTH-B"
OTK Over The Knee
OTLF Open Taxi & Limousine Foundation, "OT&LF"
OTL Out To Lunch
OTM On Time Marker
OTP On The Phone
OT Off Topic
OTOH On The Other Hand
OT Old Testament
OT OverTime
OTR Off The Record
OTR On The Rag
OTS Office of Thrift Supervision
OTS Officers' Training School
OTS Off The Shelf
OTTOMH Off The Top Of My Head
OTV Orbital Transfer Vehicle [Space]
OTW One True Way
OUTWATS OUTward Wide Area Telephone Service [telephony]
OV Orbiter Vehicle [Space]
OWHN One-Word Host Name
OW Over-Write
P2 Interpersonal Messaging Protocol (for heading and body)
P3 Protocol used by UA Entities and MTA Entities
P4 The video interface bus on the 3/80
PAA P-AzoxyAnisole
PABX Private Automatic Branch eXchange [telephony]
PACE Program for Arrangement of Cables and Equipment
PAC Privilege Attribute Certificate
PACT Prefix Access Code Translator
PACX Private Automatic Computer eXchange
PAD Packet Assembler-Disassembler (for networking)
PAD Public Access Device (networking)
PADS PeroxylAmine DiSulfonate
PAK Product Authorization Key
PAL Personal Answer Line (Sun group)
PAL Phase Alternation Line-rate
PAL Programmable Array Logic
PAMD Payload Assist Module, Delta-class, "PAM-D"
PAM Payload Assist Module [Space]
PAM Pulse Amplification Modulation
PAM Pulse-Amplitude Modulation
PAN Personal Account Number
PANS Pretty Advanced New Stuff
PAO Palo Alto CA
Pa Pascal
PA Pennsylvania
PA Per Annum
PA Play Aid
PA Power Alarm
PA Power of Attorney
PAP Printer Access Protocol
PA Precision Architecture (HP)
PA Press Agent
PA Private Account
PA Process Alert
PA Program Address
PA protactinium, "Pa"
PA Public Address
PA Purchasing Agent
PARC Palo Alto Research Center, xerox
PAR Peak-to-Average Ratio, "P/AR"
PAR Precision Approach Radar
PAR Project Authorization Request
PAS Public Announcement Service
PAT Power Alarm Test
PAT Profit After Tax
PATROL Program for Administrative Traffic Reports On Line
PAX Private Automatic eXchange
PBC Peripheral Bus Computer
PBC Processor Bus Controller
PBD Pacific Bell Directory
PBM Play By Mail game
PBM Portable BitMap file format
PBS Public Broadcasting System
PBT Profit Before TAX
PBX Private Branch eXchange [telephony]
PCA Positive Controlled Airspace (above 18,000')
PCA Printed-Circuit Assembly
PCAT Personal Computer/Advanced Technology, "PC/AT"
PCB PolyChlorinated Biphenyls
PCB Printed Circuit Board
PCB Process Control Block
PCB Protocol Control Block (TCP)
PCC Portable C Compiler
PCDA Program Controlled Data Acquisition
PCDOS Personal Computer DOS, "PC-DOS"
PCF Portable Compiled Font
PCF Puritanical Control Freaks
P (Chem.) para-, "p-"
PCH Parallel CHannel
PCIE President's Council on Integrity and Efficiency
PCILO Perturbational Configuration Interaction of Localized Orbitals
PCI Panel Call Indicator
PCI Peripheral Components Interface
PCI Protocol Control Information
PCL Printer Command Language
PCL Programmable Command Language
PCM Plug-Compatible Mainframe
PCM Pulse-Code Modulation
PCNFS Personal Computer Network File System
PCN Personal Communication Network
PCO Peg Count and Overflow
PCO Process Change Order
PCPC Personal Computers Peripheral Corporation
PC Peace Corps
PC PerCent/PerCentage
PC Personal Computer
PC Piece of Crap
PC Player Character (see NPC)
PC Politically Correct
PC Post Card
PC Post Cibum (after meals)
PC Primary Center
PC Printed Circuit
PC Privileged Character
PC Privy Council
PC Production Control
PC Program Counter
PC Progressive Conservative party (Canada)
PCSA Personal Computer Systems Architecture
PCS Patchable Control Store
PCS Permanent Change of Station
PCTE Portable Common Tools Environment
PCTS Posix Conformance Test Suite
PCTV Program Controlled TransVerters
PDAD Proposed Draft ADdendum
PDA Public Displays of Affection
PDB Process DataBase
PDE Partial Differential Equation
PDES Product Data Exchange Specifications
PDF Power Distribution Frame
PDF Program Development Facility
PDIF Product Definition Interchange Format
PDI Power and Data Interface
PDL Page Description Language
PDL Page/Program Description/Design Language
PDL Program Design Language
PDN Public Data Network
PD Per Diem
PD Peripheral Decoder
PD Police Department
PD Potential Difference
PDP Plasma Display Panel
PDP Programmed Data Processor [DEC]
PD Public Domain
PDQ Pretty Damned Quick
PDS Portable Display Shell
PDSP Peripheral Data Storage Processor
PDS Premises Distribution System (AT&T)
PDS Public Domain Software
PDT Pacific Daylight Time
PDU Product Development Unit
PDU Protocol Data Unit
PEBCAK Problem Exists Between Chair and Keyboard
PEBCAK Problematic Error Between the Chair and Keyboard
PECC Product Engineering Control Center
PEDRI Proton-Electron Double-Resonance Imaging
PEI Prince Edward Island
PEM Privacy Enhanced Mail
PEPE Pepe Est Presque Emacs
PE Peripheral Equipment
PE Phase Encoded (1600 bpi)
PE Physical Education
PE PolyEthylene
PEP Packetized Ensemble Protocol
PEP Productivity Enhancement Project
PE Prince Edward island
PE Printer's Error
PE Professional Engineer
PE Protestant Episcopal
PERFECT PERFormance Evaluation for Cost-Effective Transformations
PERL Pathologically Eclectic Rubbish Lister
PERL Practical Extraction and Report Language
PERT Program Evalution and Review Technique
PES PhotoElectron Spectroscopy
PETA People for the Ethical Treatment of Animals
PEX Phigs/phigs+ Extension to X
PEXSI PEX Sample Implementation (gfx), "PEX-SI"
PFB Printer Font Binary
PF Programmed Function
PFPU Processor Frame Power Unit
PGA Pin Grid Array
PGA Professional Graphics Adapter
PGA Pure Grain Alcohol
PG Perge Notice
PHA Pulse Height Analyzer/Analysis
PHIGS Programmer's Hierarchical Interactive Graphics System
PHOTOCD PHOTOgraphic Compact Disk
PH Parity High bit
PH Potential of Hydrogen, "pH"
PH Process Hold
PHS Public Health Service
PHYSREV Physical Review Journal, "PhysRev"
PIA Plug-In Administrator
PIC Pilot In Command
PIC Plastic-Insulated Cable
PIC Primary Independent Carrier
PICS Plug-in Inventory Control System (PICS/DCPR)
PID Process IDentifier
PID Protocol IDentifier
PIF Paid In Full
PIF Program Information File
PIMS Profit Impact of Marketing Strategy
PINE Pine Is Not Elm
PING Packet InterNet Groper
PIN Personal Identification Number
PIP Packet Interface Port
PIP Periphal Interchange Program
PI Principal Investigator
PI Protocol Interpreter
PISS Passive Ignorance Silence Strike
PITA pain in the ass
PITA Pain In The Ass
PITI Principal, Interest, Taxes, Insurance
PIT Principal, Interest, and Taxes
PIXEL PIcture ELement
PL1 Programming Language One, "PL/1"
PLAN Public Lands Action Network
PLA Programmable Logic Array
PLCC Plastic Leaded Chip Carrier
PLC Programmable Logic Controller
PLD Programmable Logic Device
PLL Phase-Locked Loop
PLM Programming Language for Microcomputers
PLMK Please Let Me Know
PLO Palestine Liberation Organization
PLO Please Leave On
PL Parity Low bit
PLS Physical Layer Signaling
PLSS Portable Life Support System
PLT Panduit Locking Tie
PMAC Peripheral Module Access Controller
PMA Physical Medium Attachment
PMC Permanently Manned Capability
PMDF Pascal Memo Distribution Facility
PMEG Page Map Entry Group
PMFJI, PMJI Pardon Me (For) Jumping In
PMG Page Map Group
PMIRR Pressure Modulated InfraRed Radiometer (on Mars Observer)
PMMU Paged Memory Management Unit
PMO Prime Minister's Office
PMOS P channel Metal Oxide Semiconductor (P-MOS) (see MOS)
PM PayMaster
PM Peripheral Module
PM Phase Modulation
PM Plant Management
PM Police Magistrate
P&M Posted & Mailed
PM PostMaster
PM Post Meridiem (after noon)
PM PostMortem
PM Presentation Manager
PM Pressurized Module
PM Preventive Maintenance
PM Prime Minister
PM Provost Marshal
PMRC Parents' Music Resource Center
PMSL Pissed MySelf Laughing
PMT PhotoMultiplier Tube
PMU Precision Measurement Unit
PMX Presentation Manager for the X window system, "PM/X"
PNB Pacific Northwest Bell
PN Part Number
PNPN Positive-Negative-Positive-Negative devices
PNP Plug N Play
PNP Positive-Negative-Positive (transistor)
PN Promissory Note
POA Power Of Attorney
POB Periphal Order Buffer
POC Port Of Call
POD Pay On Delivery
POD Point Of Distribution
POE Port Of Entry/Embarkation
POF Programmable Operator Facility
POGO Polar Orbiting Geophysical Observatory
POH Pilot's Operating Handbook
POK Power on Okey Signal
POM Phase Of Moon
PO Petty Officer
PO Postal Order
PO Post Office
POP Point of Presence [telephony]
POP Point Of Production
POP Post Office Protocol
POP Processor On Plug-in (h/w)
POPS Paperless Order Processing System
PO Purchase Order
POR Point Of Receive
POR Price On Request
POSI Promoting conference for OSI
POSIX Portable Operating System for unIX
POS Point Of Sale
POS Programmable Option Set
POST Power On Self Test
POSYBL PrOgramming SYstem for distriButed appLications
POTS Plain Old Telephone Service
POTS Plain Ordinary Telephone System
POTV Personnel Orbit Transfer Vehicle [Space]
POV Point Of View
POV Point Of View
POWER Performance Optimization With Enhanced Risc
POW Prisoner Of War
P page, "p."
PPA Post Pack Audit
PPB Parts Per Billion
PPBS Planning, Programming, and Budgeting Systems
PPC Pour Prendre Conge' (to take leave)
PPCS Person to Person, Collect, Special [telephony]
PPD Peripheral Pulse Distributor
PPD PostScript Printer Description
P per (as in m.p.h.), "p."
P peta- (SI prefix)
P phosphorus, "P"
P pico- (SI prefix), "p"
PPI Professional Press Inc.
PPI Programmable Peripheral Interface
PPL pretty please
PPM Page Per Minute
PPM Parts Per Million
PPM Portable PixMap file format
PPM Product Portfolio Management
PPN Parameterized Post-Newtonian formalism for general relativity
PPN Project Programmer Number
PPN Public Packet Switching
PP pages, "pp."
PP Painting Processor
PP Parcel Post
PP Past Participle
PP Post Pay
PPP Point-to-Point Protocol
PP Primary Point
PP Private Pilot
PPS PostPostScriptum
PPS Product Performance Surveys
PPS ProduktionsPlanungs- und Steuerungssysteme
PPS Public Packet Switching network
PPT Parts Per Trillion
PPT Pulse Pair Timing
PPT Punched Paper Tape
PQ Province of Quebec
PRCA Puerto Rico Communications Authority
PRC People's Republic of China
PRC Planning Research Corporation
PREMIS PREMises Information System
PREPNET Pennsylvania Research & Economic Partnership network, "PREPnet"
PRG PAL/PROM Programming Department
PRI Primary Rate Interface
PRISM Parallel Reduced Instruction Set Multiprocessing
PRMD Private Management Domain
PROFS PRofessional OFfice System
PROLOG PROgramming in LOGic
PROMATS PROgrammable Magnetic Tape System
PROM Programmable Read-Only Memory
PROPAL Programmed PAL
PROTEL PRocedure Oriented Type Enforcing Language
PROXYL tetramethyl-PyRrolidine-OXYL
PR PayRoll
PR Public Relations
PR Puerto Rico
PRS Personal Response System
PRTC Puerto Rico Telephone Company
PSAP Public Safety Answering Point
PSA Problem Statement Analyzer
PSA Public Service Announcement
PSC Pittsburgh Supercomputer Center
PSC Polar Stratospheric Clouds
PSC Prime Service Contractor
PSC Public Safety Calling system
PSC Public Service Commission
PSDC Public Switched Digital Capability
PSDN Packet-Switched Data Network
PSDS Public Switched Digital Service
PSDS Public Switched Digital Service [telephony, AT&T?]
PSE Packet Switch Exchange
PSE Programming Support Environment
PSF Point Spread Function
PSG Platoon SerGeant
PSG Professional Service Group (Sun group)
PSI Packetnet System Interface
PSI Packet Switch Interface
PSIU Packet Switch Interface Unit
PSK Phase-Shift Keying
PSL Problem Statement Language
PSM Packet Service Module
PSM Packet Service Module
PSM Position Switching Module
PSM Professional Service Manager
PSN Packet Switched Network
PSN Packet Switching Node
PSN Packet Switch Node
PSO Pending Service Order
PS PicoSecond
PS PostScript
PS PostScript [Adobe (tm)]
PS PostScriptum
PS Power Steering
PS Power Supply
PSP Product Support Plan
PSP Program Segment Prefix
PS Process Stop Ship
PS Program Store
PS Public School
PSR Product Specific Realizations
PSR Product Specific Release
PSR PulSaR
PSS Packet Switched Services
PSS Packet Switch Stream
PSTN Public Switched Telephone Network
PST Pacific Standard Time
PSU Program Storage Unit
PSWM PostScript Window Manager
PSW Program Status Word
PTA Parent-Teacher Association
PTAT Private Trans Atlantic Telecommunications
PTD Parallel Transfer Disk/Drive
PTE Page Table Entry
PTI Portable Test Instrument
PTN Plant Test Number [telephony:actual number assigned for 800 service]
PTO Patent and Trademark Office
PTO Please Turn Over
PTO Power Take-Off
PT Pacific Time
PT Patrol Torpedo (as in PT boat)
PT Physical Therapy
PT Physical Training
PTP Point To Point
PT Program Timer
PTSD Post Traumatic-Stress Disorder
PTSS/PTSD Post Traumatic Stress Syndrome / Disorder
PTT Postal, Telephone, and Telegraph administration
PTT Post, Telephone and Telegraph administration
PTV Passenger Transport Vehicle [Space]
PTW Primary Translation Word
PTY Pseudo-Terminal driver
PUC Peripheral Unit Controller
PUC Public Utilities Commission
PUD Planned Unit Development
P (UK) pence, pennies, penny, "p"
PU Physical Unit
PUP PARC Universal Packet protocol
PVC Permanent Virtual Circuits
PVC PolyVinylChloride
PVFS Post Viral Fatigue Syndrome
PVN Private Virtual Network
PVO Pioneer Venus Orbiter
PV PhotoVoltaic
PVT Private (pilot certificate)
PWB Printed Wiring Board
PWB Programmers Work Bench
PWD Print Working Directory
PWG Permanent Working Group
PW Prisoner of War (usually POW)
PX Post eXchange (see also BX)
QAM Quadrature Amplitude Modulation
QA Quality Assurance
QAS Quasi-Associated Signaling
QBE Query By Example
QBP Queen's Bishop's Pawn (chess)
QB Queen's Bishop (chess)
QCPE Quantum Chemistry Program Exchange
QC Quality Control
QC Queen's Counsel
QDA Quantity Discount Agreement
QDCS Quality, Deliverly, Cost, Service / Safety
QD Quaque Die (daily)
QED Quantum ElectroDynamics
QED Quod Erat Demonstrandum (which was to be demonstrated)
QED Quod Est Demonstrandum (that which was to be demonstrated)
QEF Quod Erat Faciendum (which was to be done)
QEI Quod Erat Inveniendum (which was to be found out)
QE Quick Estimation
QET Quantum Effect Transistor
QIC Quarter-Inch Cartridge
QID Quater In Die (four times a day)
QIS Quality Information System
QKtP queen's knights's pawn (chess)
QKt queen's knight (chess)
QLI Query Language Interpreter
QMC QuarterMaster Corps
QMF Query Management Facility
QMG QuarterMaster General
QMP Quality Measurement Plan
QM QuarterMaster
QMS Quality Micro Systems
QNS Quantity Not Sufficient
Q Queen('s), "Q."
Q question, "Q."
QQV which see (plural of q.v.), "qq.v."
QRA Quality Reliability Assurance
QRSS Quasi Random Signal Source
QSO Quasi-Stellar Object
QSS Quality Surveillance System
QTC Quantitative Technology Corporation
QTY Quantity
QUANGO QUAsi Non-Governmental Organization
QUANTAS Quantas Empire Airways
QUANTAS QUeensland And Northern Territory Aerial Service, "Quantas"
QUEL QUEry Language
QV which see (sing.), "q.v."
QWERTY first six keys from left on top alphabetic row of standard keyboard
QWL Quality of Working Life
RAAF Royal Australian Air Force
RACEP Random Access and Correlation for Extended Performance
RACE Random Access Card Equipment
RADAR Radio Association Defending Airwave Rights (radar detector makers)
RADAR RAdio Detection And Ranging
RADM Rear ADMiral
RAD Radiation Absorbed Dose
RAD Rapid Access Disk
RAF Royal Air Force
RAID Redundant Arrays of Inexpensive Disks
RAMP Ratings And Maintenance Phase
RAM Random-Access Memory
RAND Rural Area Network Design
RAO Regional Accounting Office
RAO Revenue Accounting Office
RA radium, "Ra"
RARDE Royal Armaments Research and Development Establishment
RARE European Association of Research Networks
RA Regular Army
RARE Reseaux Associes pour la Recherche Europeenne
RA Research Assistant
RA Return Authorization
RA Royal Academy
RARP Reverse Address Resolution Protocol (Ethernet->Internet)
RAR Return Address Register
RASC Residence Account Service Center
RAS Reliability, Availability, and Serviceability
RATFOR RATional FORtran
RBC Red Blood Count
RBHC Regional Bell Holding Company
RBI Runs Batted In
RBOC Regional Bell Operating Company
RBOR Request Basic Output Report
RB Rhythm and Blues, "R&B"
RBTL Read Between The Lines
RBT Reliable Broadcast Toolkit
RCAF Royal Canadian Air Force
RCA Radio Corporation of America
RCAS Reserve Component Automation System
RCC Radio Common Carrier
RCC Remote Cluster Controller
RCC Reverse Command Channel
RCF Remote Call Forwarding
RCI Rodent Cage Interface (for SLS mission)
RCLDN Retrieval of Calling Line Directory Number
RCL Runtime Control Library
RCMAC Recent Change Memory Administration Center
RCMP Royal Canadian Mounted Police
RCM Remote Carrier Module
RCP Remote CoPy
RC Receive Clock
RC Red Cross
RC Regional Center
RC Repair Center (Sun)
RC Resistance-Capacitance
RC Resistor-Capacitor circuit (as in filters)
RC Roman Catholic
RC Run Commands
RCSC Remote Spooling Communications Subsystem
RCS Reaction Control System
RCS Revision Control System
RCT Relayed Coherence Transfer
RCU Radio Channel Unit
RCVR ReCeiVeR
RDA Remote Data Access
RDBMS Relational DataBase Management System
RDES Remote Data Entry System
RDF Radio Direction Finding
RDL Remote Digital Loopback
RDM Reliably-Delivered Message (sockets)
RDP Reliable Datagram Protocol
RD Received Data
RD Research and Development, "R&D"
RD Rural Delivery
RDS Radio Digital System
RDT Radio Digital Terminal
REA Rail Express Agency
RECON Reconnaissance
REC Regional Engineering Center
REGIS REmote Graphics Instruction Set
REMOBS REMote OBservation System
REM Rapid Eye Movement
REM Rat Enclosure Module (for SLS mission)
REM Rational Economic Man
REM Remote Equipment Module
REM Ring Error Monitor
REM Roentgen Equivalent in Man
REN Ring Equivalence Number
REO Removable, Erasable, Optical
REO R. E. Olds
REQSPEC REQuirements SPECification
RETMA Radio Electronics Television Manufacturers Association (rack spacing)
REX Raster Engine
REX Remote EXecution
REXX Restructured EXtended eXecutor
RFC Request For Comments [Internet]
RFD Rural Free Delivery
RFE Request For Enhancement
RFI Radio Frequency Interference
RFP Request For Proposals
RFQ Request For Quotes
RF Radio Frequency
RFS Remote File Sharing
RFS Remote File System
RFT Request For Technology
RGBI Red Green Blue Intensity
RGB Red Green Blue
RGP Raster Graphics Processor
RGU Radio Government/Universal, "RG/U"
RHC Regional (Bell) Holding Company
RHF Restricted Hartree-Fock
RH Right Hand
RHS Right Hand Side
RHV Reid-Hillview Intergalactic, San Jose CA
RIACS Research Institute for Advanced Computer Science (at NASA Ames)
RIAS Radio In the American Sector, berlin
RID Remote Isolation Device
RIFF Resource Interchange File Format
RIF Reading Is Fundamental
RIF Reduction In Force
RILM Repertoire International de Literature Musicale
RIPE Reseaux IP Europeenne
RIP Raster Image Processor
RIP Rest In Peace/Requiescat In Pace
RIP Routing Information Protocol
RIPS Raster Image Processing Systems Corp.
RI Receiving & Inspection, "R&I"
RI Rhode Island
RI Ring Indicator
RISC Reduced Instruction Set Computer
RISC Relegate Important Stuff to the Compiler
RISLU Remote Integrated Services Line Unit
RITA Recognition of Information Technology Achievement award
RIT Rochester Institute of Technology
RJE Remote Job Entry [IBM]
RLCM Remote Line Concentrating Module
RLC Resistor Inductor Capacitor
RLDS The Re-organized Church of Latter-Day Saints
RLG Research Libraries Group
RLIN Research Libraries Information Network [run by RLG (q.v.)]
RLL Run Length Limited
RLOGIN Remote Login, "rlogin"
RL Real Life (sometimes written as r/l)
RLT Remote Line Test
RMA Return Materials Authorization
RMAS Remote Memory Administration System
RMATS Remote Maintenance Admisistration and Traffic System [telephony]
RMF Read Me First
RMI Radio Magnetic Indicator
RM Record Marking
RM Regional Manager
RMR Remote Message Registers
RMR Return Material Receipt
RMS Record Management System
RMS Remote Manipulator System [Space]
RMS Richard M. Stallman
RMS Root Mean Square
RMS Royal Mail Ship
RNA RiboNucleic Acid
RNGC Revised New General Catalog
RNOC Regional Network Operations Center
RN Reference Noise
RN Registered Nurse
RN Royal Navy
RNR Receive Not Ready
RNZAF Royal New Zealand Air Force
ROA Return On Assets
ROB Remote Order Buffer
ROC Regional Operating Company
ROE Rate Of Exchange
ROE Return On Equity
ROFF Run-OFF
ROFL Rolling On the Floor Laughing (there are variations)
ROG Receipt Of Goods
ROH Receiver Off Hook
ROI Region Of Interest
ROI Return On Investment
ROM Range Of Motion (medical)
ROM Read-Only Memory
ROM Rupture Of Membrane (as in birth)
RONABIT Return On Asset Before Income Tax
RONA Return on Net Assets
RO Read/Only, "R/O"
RO Receive Only
ROSAT ROentgen SATellite
ROSE Remote Operations Service Element
ROTC Reserve Officers' Training Corps
ROTFL Rolling On The Floor Laughing
ROTFLMAO Rolling On The Floor Laughing My Ass/Arse Off
ROTFLOL Rolling On The Floor Laughing Out Loud
ROTF Rolling On The Floor (Usually seen as ROFL)
ROTL Remote Office Test Line
ROTS Rotary Out Trunks Selectors
ROUS Rodents Of Unusual Size
ROW Rest Of the World
ROYGBIV Red, Orange, Yellow, Green, Blue, Indigo, Violet, "Roy G. Biv"
RPC Remote Procedure Call
RPG RePort Generator
RPG Role Playing Game
RPI Rolling Plan Indices
RPM Remote Process Management
RPM Removable Peripheral Module
RPM Resales Price Maintenance
RPM Revolutions Per Minute
RPN Reverse Polish Notation
RPO Railway Post Office
RP Rolling Plan
RPS Revolutions Per Second
RPS Rotational Positional Sensing (disks)
RPV Remotely Piloted Vehicle
RQ RuneQuest
RQSM Regional Quality Service Management
RQS Rate/Quote System
R rand
R recto, "r."
R Republican, "R."
R right, "r"
R Ring
RRIP Rock Ridge Interchange Protocol
R roentgen
R Rolemaster
R rook in chess
RRO Rate and Route Operator [telephony]
RRO Reports Receiving Office
RR RailRoad
RR Rate & Route, "R&R"
RR Receive Ready
RR Resource Record
RR Route Relay
RR Rural Route
RS232 Digital Communication Standard, "RS-232"
RSA Repair Service Attendant
RSB Repair Service Bureau
RSC Remote Switching Center
RSC Residence Service Center
RSCS Remote Source Control System
RSCS Remote Spooling and Communication Subsystem
RSE Research & Systems Engineering, "R&SE"
RSFSR Russian Soviet Federated Socialist Republic
RSH Remote/Restricted SHell
RSLE Remote Subscriber Line Equipment
RSLM Remote Subscriber Line Module
RSM Remote Switching Module
RSN Real Soon Now
RS Recommended Standard
RS Recording Secretary
RS Revised Status
RS Right Side
RS RISC System
RS Royal Society
RSS Really Simple Syndication
RSS Remote Switching System
RSTSE Resource System Time Sharing/Enhanced, "RSTS/E"
RSTS Resource System Time Sharing
RSU Remote Switching Unit
RSVP Repondez S'il Vous Plait (please reply)
RSV Revised Standard Edition
RSWC Right Side up With Care
RTAC Regional Technical Assistance Center [telephony]
RTA Remote Trunk Arrangement
RTC Right To Copy
RTFB Read The Fine Book
RTFMP Read The Fine Man Page
RTFM Read The Fine/F***ing Manual
RTF Read This First
RTF Rich Text Format
RTFS Read The Fine Source
RTG Radioisotope Thermoelectric Generator
RTL Resistor-Transistor Logic
RTL Run-Time Library
RTLS Return To Launch Site (Shuttle abort plan)
RTMP Routing Table Maintenance Protocol
RTM Regional Telecommunications Management
RTM Remote Test Module
RT RadioTelephone
RT RealTime
RT Real-Time/Rise Time/Radiation Therapy/RighT (as opposed to Left)
RT Risc Technology [IBM]
RTR Reel-To-Reel
RTSE Reliable Transfer Service Element
RTSL Read The Source Luke
RTS Ready To Send
RTS Real Time Systems (lll-csrg)
RTS Reliable Transfer Service
RTS Remote Testing System
RTS Return To Stock
RTT Round Trip Time
RTTY Radio Teletype
RTU Real Time Unix
RTU Remote Trunking Unit
RTU Right To Use
RUM Remote User Multiplex
RUOK Are you OK?
RU Receive Unit
RWC Remote Work Center
RWE Remote Wall Enclosure
RWM Read/Write Memory, "R/WM"
RW Read/Write
RW Read/Write, "R/W"
RW Real World
RW Right Worshipful
RW Right Worthy
RX Remote eXchange
SAAB Svenska Aeroplan AktieBolaget (Swedish Aircraft Corporation)
SAA South Atlantic Anomaly
SAA Systems Application Architecture (IBM)
SABME Set Asynchronous Balanced Mode Extended
SABRE Semi-Automated Business Research Environment
SACK Selective ACK
SAC Service Area Code
SAC Strategic Air Command [US military]
SADD Students Against Drunk Driving
SAE Society of Automotive Engineers
SAGA Solar Array Gain Augmentation (for HST)
SAG Street Address Guide
SAIC Science Applications International Corporation
SAI Serving Area Interface
SAKDC Swiss Army Knife Data Compression
SALI Standalone Automatic Location Identification
SALT Strategic Arms Limitting Talks
SAMA Step-by-step Automatic Message Accounting [telephony]
SAMPEX Solar Anomalous and Magnetospheric Particle EXplorer
SAM Smart Assed Masochist / Stand And Model
SAM Surface-to-Air Missile
SAMTO Space And Missile Test Organization
SAO Smithsonian Astrophysical Observatory
SAP Second Audio Program
SAP Service Access Point
SARA Satellite pour Astronomie Radio Amateur
SAREX Search and Rescue Exercise
SAREX Shuttle Amateur Radio Experiment
SAR Search And Rescue
SAR Store Address Register
SAR Synthetic Aperture Radar
SARTS Switched Access Remote Test System
SA Salvation Army
SA Seaman Apprentice
SA Service Assistant
SASE Self-Addressed Stamped Envelope
SASE Specific Application Service Element
SA Sex Appeal
SA Sine Anno (without date)
SASI Shugart Associates Systems Interface
SA South Africa
SA South America
SA South Australia
SAS Single Attach Station
SAS Southern All Stars
SAS Space Activity Suit
SAS Space Adaptation Syndrome
SAS Statistical Analysis Software?
SA Subject to Approval
SAT Satellite [Space]
SAT Scholastic Aptitude Test
SAT Special Access Termination
SAT Supervisory Audio Tone
SAT Synthetic Aperture Telescope
SAW Surface Acoustic Wave
SBA Small Business Administration
SBC Single Board Computer
SBMS Southwestern Bell Mobile Service
SBS Skyline Business Systems
SBUS School Bus, "S-Bus"
SBU Strategic Business Unit
SBWR Simplified Boiling Water Reactor
SCADA Supervisory Control And Data Acquisition
SCADC Standard Central Air Data Computer
SCAD Subsonic Cruise Armed Decoy
SCAME SCreen oriented Anti-Misery Editor
SCAMP Single-Chip A-series Mainframe Processor
SCAN Switched Circuit Automatic Network
SCA Shuttle Carrier Aircraft
SCA Society for Createive Anachronism
SCA Sunlink Channel Adapter
SCAT Stromberg-Carlson Assistance Team
SCB System Control Block
SCCA Sports Car Club of America
SCC Serial Communication Controller
SCC Specialized Common Carrier
SCCS Source Code Control System
SCCS Specialized Common Carrier Service
SCCS Switching Control Center System
SCC Switching Control Center (or Specialized Common Carriers)
SCED SCSI/Ethernet/Diagnostics (Sequent board)
SCE Signal Conversion Equipment
SCE Structure Chart Editor
SCF Selective Call Forwarding
SCF Self Consistent Field
s.c.f.t.h.i. Smiley Captiond for the Humor-Impaired
SCIFI SCIence FIction, "sci-fi"
SCI SpaceCraft Incorporated
SCM Software Configuration Management
SCMS Serial Copy Management System
SCM Subscriber Carrier Module
SCNR Sorry, Could Not Resist
SCOOPS SCheme Object Oriented Programming System
SCO Santa Cruz Operation
SCO Serving Central Office
SCOTS Surveilance and Control Of Transmission Systems
SCOT Stepper Central Office Tester
SCPC Signal Channel Per Carrier
SCPD Supplementary Central Pulse Distributor
SCPI Standard Commands for Programmable Instrumentation
SCP Secure CoPy (from the SSH suite)
SCP Signal Control Point
SCP Signal Conversion Point
SCP Sunlink Communications Processor
SCP System Control Program
SCRAM Static Column RAM (h/w)
SCSA Sun Common SCSI Architecture
SC Scanner Controller
SC Secondary Channel
SC Sectional Center
SCSI Small Computer System Interface (pronounced scuzzi)
SC Skull & Crossbones, "S&C"
SC South Carolina
SC SpaceCraft, "S/C"
SCS Silicon Controlled Switch
SC SubCommittee
SCT Schmidt-Cassegrain Telescope
SCTS Secondary Clear To Send
SCUBA Self Contained Underwater Breathing Apparatus
SCUD Subsonic Cruise Unarmed Decoy
SCU Selector Control Unit
SCX Specialized Communications eXchange
SDA Send Data With Immediated Ackonwledge
SDA Swappable Data Area
SDB Safety Deposit Box
SDCD Secondary Data Carrier Detect
SDD Specific Development & Design, "SD&D"
SDF Secondary Distribution Frame
SDF Standard Data Format
SDF SubDistribution Frame
SDH Synchronous Digital Hierarchy (synchronous multiplexed network)
SDIO Strategic Defense Initiative Organization
SDI Selective Dissemination of Information
SDI Space Defense Initiative
SDIS Switched Digital Integrated Service
SDI Standard Disk Interconnect
SDI Standard Disk Interface
SDI Storage Device Interconnect
SDI Strategic Defense Initiative [US Government]
SDK Software Development Kit
SDLC Synchronous Data Link Control [IBM]
SDLP Standard Device Level Protocol
SDL Specification and Description Language
SDL System Design Language
SDM Sub-rate Data Multiplexer
SDN Software-Defined Network
SDOC Selective Dynamic Overload Controls
SDO Staff Duty Officer
SDP Service Delivery Point
SDRC Structural Dynamics Research Corporation
SDR Store Data Register
SDSC San Diego Supercomputer Center
SD SCSI Disk
SDSC Synchronous Data Set Controller
SD Sensory Deprivation
SD South Dakota
SDS Sodium Dodecyl Sulfate
SDS Switched Data Service
SDS Synchronous Data Set
SDU Service Data Unit
SDV Shuttle Derived Vehicle [Space]
SEAP Service Element Access Point
SEAS Signaling Engineering and Administration System
SEATO SouthEast Asia Treaty Organization
SECAM SEquential Couleur Avec Memoire
SECNAV SECretary of the NAVy
SEC Securities and Exchange Commission
SEC Security Exchange Commission
SECSY Spin-Echo Correlated SpectroscopY
SED Stream EDitor
SEI Software Engineering Institute (Carnegie Mellon)
SEI Space Exploration Initiative
SEL SELector
SEL Software Engineering Laboratory
SELV Safety Extra-Low Voltage
SEM Scanning Electron Microscope
SEP someone else's problem
SERC Science & Engineering Research Council
SERC Swedish Energy Research Commission
SER Satellite Equipment Room
SE South East
SESRA Seattle Employee Services Recreation Association
SES Service Evaluation System
SEST Swedish-European Submillimeter Telescope
SE Systems Engineer
SETI Search for ExtraTerrestrial Intelligence
SET Single Electron Transfer
SET Software Engineering Technology
SFA sweet fuck all
SFDM Statistical Frequency Division Multiplexing
SFD Sun Federal Division
SFMC Satellite Facility Management Center
SFO San Francisco CA
SFRPG Science Fiction Role Playing Game
SF San Francisco
SF Science Fiction; Speculative Fiction
SF Single Frequency
SF Standard Form
SF Star Frontiers
SGI Silicon Graphics Incorporated
SGML Standard Generalized Markup Language
SGMP Simple Gateway Monitoring Protocol (superseded by SNMP)
SG Signal Ground
SG StarGuard
SG SubGroup
SG SuperGroup
SHAPE Supreme Headquarters Allied Powers Europe
SHAR SHell ARchiver
SHCD Sherlock Holmes Consulting Detective
SHF Super High Frequency (3-30GHz)
SHID slaps head in disgust
SHRPG Super Hero Role Playing Game
SIAM Society for Industrial and Applied Mathematics
SICK Single Income, Coupla' Kids
SIC Second In Command
SIC Silicon Integrated Circuit
SID Sudden Ionospheric Disturbance
SID System IDentification
SIGCAT Special Interest Group for Cd-rom Applications Technology
SIG Special Interest Group
SIMD Single Instruction, Multiple Data
SIMM Single Inline Memory Module
SINE SINE is not EINE
SIPC Securities Investment Protection Corporation
SIPP Strategic Industry Partners Program
SIP Single Inline Package/Pin
SIPS Satellite Imagery Processing System
SIR Shuttle Imaging Radar
SIRTF Space (formerly Shuttle) InfraRed Telescope Facility
SISAL Streams and Iteration in a Single-Assignment Language
SISCOM Satellite Information System COMpany
SIS Software Information Services
SIS Strategic Information System
SI Staten Island
SI Status Indicator
SI System Integrater
SITA Societe Internationale Telecommunications Aeronautiques
SIT Special Information Tone
SJC San Jose CA
SJ Society of Jesus
SKU Stock Keeping Unit
SLALOM Scalable Language-independent Ames Laboratory One-minute Measurement
SLAN Sine Loco, Anno, (vel) Nomine (without place, year, or name)
SLAPP Strategic Litigation Against Protesting People
SLAR Side Looking Airborne Radar
SLA Special Libraries Association
SLA Symbionese Liberation Army
SLA Synchronous Line Adapter
SLBM Submarine Launched Ballistic Missiles
SLC Space Launch Complex [Space]
SLC Subscriber Loop Carrier
SLC Super Low Cost
SLDC Synchronous Data Link Control
SLED Single Large Expensive Drive
SLE Screening Line Editor
SLIC Subscriber Line Interface Circuit
SLIC System Link and Interrupt Controller (Sequent)
SLIM Subscriber Line Interface Module
SLIP Serial Line Internet Protocol
SLP Super Long Play (VHS VCR, aka EP)
SL Salvage Loss
SL SpaceLab
SL Space Launch [Space]
SLS Space(lab) Life Sciences
SLUFAE Surface Launched Unit, Fuel Air Explosive
SMA Sergeant Major of the Army
SMASF SMAS Frame
SMA Spectrum Manufacturers Association
SMASPU SMAS Power Unit
SMAS Supplementary MAin Store
SMAS Switched Maintenance Access System
SMB System Message Block
SMC Small Magellanic Cloud (see LMC)
SMDF Subscriber Main Distributing Frame
SMDI Subscriber Message Desk Interface
SMDR Station Message Detailed Recording
SMDR Station Message Detail Recording
SMDS Switched Multimegabit Data Service
SMDS switched multimegabit data service, Bellcore-developed standard
SMD Standard Molecular Data format
SMD Storage Module Device (interface standard for disk drives)
SMD Surface Mounted Devices
SMEGMA Sophisticated Modern Editor with Gloriously Magnificent Abilities
SMERSH abbr. of Russian phrase meaning "Death to the spies."
SME Society of Manufacturing Engineers
SME Solar Mesosphere Explorer
SMEX SMall EXplorers
SMG SuperMasterGroup
SMILS Sonobuoy Missile Impact Location System
SMI Structure of Management Information
SMI Sun Microsystems Inc.
SMIT System Management Interface Tool
SMK Software Migration Kit
SMLSFB So Many Losers, So Few Bullets
SMM Solar Maximum Mission
SMOC Small Matter Of Commitment
SMOF Secret Master Of Fandom
SMOH Since Major OverHaul
SMOP Simple/Small Matter Of Programming
SMO Santa Monica CA
SMP Symmetric MultiProcessing
SMPTE Society of Motion Picture and Television Engineers
SMR Service Marketing Representative
SMSA Standard Metropolitan Statistical Area
SM Service Mark
SM Sado-Masochism
SM Sex Magick
SMS Service Management System
SM Switching Module
SMTP Simple Mail Transfer Protocol
SMT Surface Mount Technology
SNADS SNA Distribution Services
SNADS Systems Network Architecture Distribution Service
SNAFU Situation Normal -- All Fouled/F***ed Up
SNAP Shipboard Non-tactical Automated data Processing program
SNAP SubNetwork Access Protocol
SNAP System and Network Administration Program
SNA Santa Ana (Orange County) CA
SNA Systems Network Architecture [IBM]
SNCF Societe Nationale des Chemins de Fer (French National Railways)
SNERT snot-nosed egotistical rude teenager
SNET Southern New England Telephone
SNF Server-Natural Format
SNF Server Normal/Natural Format
SNI Siemens Nixdorf Informationssysteme
SNMP Simple Network Management Protocol
SNM SunNet Manager
SNOBOL StriNg Oriented symbOLic Language
SNPA SubNetwork Point of Attachment
SNR Signal to Noise Ratio
SNR SuperNova Remnant
SN Subnetwork Number
SN Super Nova
SNTSC Super NTSC (video)
SNU Solar Neutrino Units
SOAC Service Order Analysis Control
SOAP Symbolic Optimizing Assembler Program
SOAR Smalltalk On A Risc
SOC Service Oversight Center
SOFIA Stratospheric Observatory For Infrared Astronomy
SOF Sales Order Form
SOHF Sense Of Humor Failure
SOHO SOlar Heliospheric Observatory
SOH Service Order History
SOH Start Of Header, ASCII control character (dec=01,control-A)
SOL Shit Out [Of] Luck
SOL Short on Landing (or, colloquially, Shit Out of Luck)
SOMM Stop On Micro-Match
SONAR Service Order Negotiation And Retrieval
SONAR SOund Detection And Ranging
SONDS Small Office Network Data System
SONET Synchronous Optical NETwork
SOP Standard Operating Procedure
SOR Sales Order Request
SO Sales Order
SO Seller's Option
SO Significant Other
SO Space Opera
SOS Save Our Souls (International standard distress call, Morse ...---...)
SOS Silicon On Sapphire
SO Strike Out
SOW Speaking Of Which
SOW Statement Of Work
SPAG Standards Promotion and Applications Group
SPAN Space Physics Analysis Network
SPAN System Performance ANalyzer
SPARC Scalable Processor ARChitecture
SPARC Standards, Planning, And Requirements Committee
SPARS Society of Professional Audio Recording Studios
SPAR Stock Points Adp Replacement
SPA Software Publishers Association
SPAWAR naval SPAce and WARfare command
SPCA Society for the Prevention of Cruelty to Animals
SPCC Society for the Prevention of Cruelty to Children
SPC Software Productivity Consortium
SPC Southern Pacific Communications
SPCS Stored Program Control Systems
SPC Statistical Process Control
SPC Stored Program Control
SPDL Standard Page Description Language (ISO)
SPDM Special Purpose Dextrous Manipulator
SPD Software Products Division
SPEC Standard Performance Evaluation Corporation
SPE Symbolic Programming Environment
SPIM Sun Product Information Meeting
SPI Selective Population Inversion
SPI Serial Peripheral Interface
SPITBOL SPeedy ImplemenTation of snoBOL
SPL System Programming Language
SPNI Society for the Protection of Nature in Israel
SPOT Systeme Probatoire pour l'Observation de la Terre
SPR Software Problem Report
SP Shore Patrol
SP Short Play (VHS VCR)
SP Signaling Point
SP Signal Processor
SP Southern Pacific (railroad) [Corporate name]
SPS Self Praise Stinks
SPS Solar Power Satellite [Space]
SPSS Statistical Package for Social Sciences (computer software)
SPS Standby Power System
SP Stack Pointer
SP Standard Play (VHS VCR)
SP Star Patrol
SP System Product (IBM VM)
SPUCDL Serial Peripheral Unit Controller/Data Link, "SPUC/DL"
SPUD Storage Pedestal Upgrade Disk/Drive
SPUR Systech Pluraxial Unplug Repeater
SPU System Processing Unit
SQA Software Quality Assurance
SQC Single-Quantum Coherence
SQC Statistical Quality Control
SQE Signal Quality Error ("heartbeat")
SQLDS Structured Query Language/Data System, "SQL/DS"
SQL Structured Query Language
SQO Some Quantity Of
SQUID Superconducting QUantum Interference Device
SRAM Scratchpad RAM
SRAM Short Range Attack Missile
SRAM Static RAM
SRA Selective Routing Arrangement
SRB Solid (fuel) Rocket Booster [Space]
SRD Secondary Receive Data
SRI Stanford Research Institute (now called SRI International)
SRM Solid Rocket Motor
SRO Standing Room Only
SRP Source Routing Protocol, an IBM specification
SR Sales Representative
SRS Service Repair System
SR Street Regal (KDX)
SRTS Secondary Ready To Send
SSAP Session Service Access Memory
SSA Soaring Society of America
SSA Social Security Administration [U.S. Government]
SSAS Station Signaling and Announcement Subsystem
SSBAM Single-SideBand Amplitude Modulation
SSBBW Super-Sized Big Beautiful Woman
SSB Single SideBand
SSCP Subsystem Services Control Point
SSCP System Services Control Point
SSC Safe, Sane, Consensual
SSC Specialized Systems Consultants
SSC Special Services Center
SSD Solid State Disk
SSDU Session Service Data Unit
S second (SI abbrev.), "s"
SSEL Session Service Selector
SSE Software Support Engineer
SSE South-SouthEast
SSFF Showcase Software Factory of the Future
SSF Space Station Fred (er, Freedom)
SSG Staff SerGeant
S Siemens
SSI Small Scale Integration
SSI Solid-State Imager (on Galileo)
SSI Space Services Incorporated [Space]
SSI Space Studies Institute
SSI Supplemental Security Income
S Sleeve
SSME Space Shuttle Main Engine
SSO Satellite Switching Office
S South
SSPC SSP Controller
SSPF Space Station Processing Facility
SSPRU SSP Relay Unit
SSP Signal Switching Point
SSP Sponsor Selective Pricing
SSPS Satellite Solar Power Station [Space]
SSP System Status Panel
SSRMS Space Station Remote Manipulator System
SSR Secondary Surveillance Radar
SSR Soviet Socialist Republic
SS Sales Support
SS Sparc Station
SS Special Services
SSS Soc.Sexuality.Spanking
SSS System Support Specialist
SS Stack Segment
SS Stop Ship
SSTO Single Stage to Orbit [Space]
SST Spectroscopic Survey Telescope
SST Spread-Spectrum Technology
SST SuperSonic Transport
SSTTSS Space-Space-Time-Time-Space-Space network
SSTV Slow Scan TeleVision
S sulphur
S Supplement
SSW South-SouthWest
STAGE Structured Text And Graphics Editor
STARS Software Technology for Adaptable, Reliable Systems
STB Software Technical Bulletin
STC Serving Test Center
STC Supplemental Type Certificate
STC Switching Technical Center
STDM Statistical Time Division Multiplexing
STD Sacrae Theologiae Doctor (doctor of sacred theology)
STD Secondary Transmit Data
STD Sexually Transmitted Disease (replaces VD)
STD State Transition Diagram
STD/STI Sexually Transmitted Disease / .. Infection
STD Subscriber Trunk Dialing [British, and elsewhere; equiv. DDD in USA]
STFU Shut the Freak/Fuck Up
STFU Sir, That's Freakin Ugly
STFW Search The Freaking Web
STILO Scientific and Technical Intelligence Liaison Office
STIS Space Telescope Imaging Spectrometer (to replace FOC and GHRS)
STI Standard Tape Interface
STL St. Louis (Lambert) MO
STN Scientific and Technical information Network
STN SuperTwisted Nematic
STOH Since Top Overhaul (cylinders, etc., but not crankshaft, etc.)
STOL Short TakeOff and Landing
STO Slater Type Orbital
STP Shielded Twisted Pair
STP Signal Transfer Point
STP Software Through Pictures
STP Spanning Tree Protocol, an IEEE 802.1 routing specification
STP Standard Temperature and Pressure (see NTP)
STRPG Star Trek: The Role-Playing Game
STR Spot The Reference
STSCI Space Telescope Science Institute, "STScI"
ST Seagate Technologies
ST Short Ton
STSI Space Telescope Science Institute
STS Sales Technical Support
STS Shared Tenant Service
STS Shuttle Transport System (or) Space Transportation System
STS Space-Time-Space network
ST STart
STTNG Star Trek, The Next Generation
STTNG Star Trek: The Next Generation, "ST:TNG"
STTOS Star Trek: The Old Stuff/The Original Series, "ST:TOS"
STV Single Transferable Vote
STV Space Transfer Vehicle [Space]
SUCCESS SUn Corporate Catalyst Electronic Support Service
SUG Sun User's Group
SUID Set UID
SUM Symantec Utilities for Macintosh
SUNDIAG SUN system DIAGnostics software
SUNET Swedish University NETwork
SUNOCO SUN Oil COmpany [Corporate name]
SUN Stanford University Network
SUNVIEW SUN's Visual / Integrated Environment for Workstations
SUNY State University of New York
SURANET Southeastern Universities Research Association network, "SURAnet"
SURF Sequent Users Resource Forum
SU Set Uid
SUSP System Use Sharing Protocol
SVC Switched Virtual Circuits
SVGA Super VGA
SVID System V Interface Definition
SVP Schematic Verification Program
SVR4 System V Release 4
SVS Switched Voice Service
SVVS System V Validation Suite
SVVS System V Verification Suite
SWAG Silly, Wild-Assed Guess
SWAHBI Silly, Wild-Assed Hare-Brained Idea
SWAN Sun Wide Area Network
SWAS Submillimeter Wave Astronomy Satellite
SWB SouthWestern Bell
SWF ShortWave Fading
SWIFT Society for Worldwide Interbank Financial Transfers
SWM Solbourne Window Manager
SWO Sales Work Order
SW South West
SWS Scientific Workstation Support (at ORNL)
SW SuperWorld
SX SimpleX signaling
SXS Step by (X) Step switching [Telephony]
SYC SYstem Control
SYMPL SYsteMs Programming Language
SYN SYNchronizing segment
SYSGEN SYStem GENeration
T1 T-carrier 1 (digital transmission line, 1.544 Mbps, 24 voice channels), one of the basic signalling systems 24x64Kb [telephony]
T1FE T1 carrier Front End
T1OS T1 carrier OutState, "T1/OS"
T3 T-carrier 3 (eq 28 T1 channels, 44.736 Mbps, 672 voice channels) [Telephony]
TAB Tape Assembly Bonding
TAB Technical Assistance Board
TACCS Tactical Army Combat service support Computer System
TAC Tactical Air Command (see SAC)
TAC Terminal Access Circuit
TAC Terminal Access Controller [ARPAnet/MILNET/DDN]
TAE Transportable Applications Environment
TAFN That's All For Now
TAF That's All Folks
TAG Technical Advisory Group (ISO)
TAL Transatlantic Abort Landing (Shuttle abort plan)
TAM Total Available Market
TANJ There Ain't No Justice
TANSTAAFL There Ain't No Such Thing As A Free Lunch
TAP Telephone Assistance Plan
TAR Tape ARchiver
TASC Technical Assistance Service Center
TASC Telecommunications Alarm Surveillance and Control system
TASI Time Assignment Speech Interpolation system
TAS Telephone Answering Service
TA Teaching Assistant
TA Terminal Adaptor
TA Territorial Army
TA Transfer Allowed
TAT TransAtlantic Telephone
TAT Turn Arround Time
TAU Thousand Astronomical Units [Space]
TBA To Be Announced/Arranged
TBD To Be Designed/Determined
TBH To Be Honest
TBO Time Between Overhaul
TB TuBerculosis
TCAP Transaction Capabilities Applications Port
TCAS T-Carrier Administration System
TCA Terminal Control Area
TCA Terminal Controlled Airspace
TCB Task Control Block
TCB Trusted Computer Base
TCCC Technical Committee on Computer Communications
TCC Trunk Class Code
TCG Test Call Generation
TCM Time Compression Multiplexer
TCM Trellis Coded Modulation
TCPIP Transmission Control Protocol/Internet Protocol, "TCP/IP"
TCP Transmission Control Protocol
TCR Transient Call Record
TCSEC Trusted Computer System Evaluation Criteria (orange book)
TCS Thermal Control System
TCS Traction Control System (to prevent wheel-spin)
TC Teachers College
TC Technical Committee (ISO)
TC Timing Counter
TC Tinned Copper
TC Toll Center
TC Total Color
TCT To Challenge Tomorrow
TCT Toll Connecting Trunk
TDAS Traffic Data Administration System
TDCC Transportation Data Coordinating Committee
TDC Tape Data Controller
TDC Terrestrial Data Circuit
TDD Telecommunications Device for Deaf
TDD Telephone Device for the Deaf
TDE Transition Diagram Editor
TDI Trusted Database Interpretation
TDL Test Description Language
TDMA Time-Division Multiple Access
TDM Time-Division Multiplexing
TDO Table of Denial Orders
TDRSS Tracking and Data Relay Satellite System
TDRS Tracking and Data Relay Satellite [Space]
TDR Time Domain Reflectometer
TD "Top's Disease"
TD TouchDown
TD Transmit Data
TD Treasury Department
TDY Temporary DutY
TEB Teterboro NJ
TECO Tape Editor and COrrector
TECO Text Editor and COrrector
TEC Technology Exchange Company
TEFLON polyTEtraFLuOrethyleNe
TEHO Tail End Hop Off
TELEX TELetypewriter EXchange
TELSAM TELephone Service Attitude Measurement
TEMA Tubilar Exchanger Manufacturers Association
TEMPEST Transient Electro-Magnetic Pulse Emanation STandard
TEMPOL TEtraMethyl-PiperidinOL-oxyl
TEMPONE TEtraMethyl-PiperidinONE-oxyl
TEMPO Technical Military Programming Organization
TEMPO TEtraMethyl-Piperidine-Oxyl
TEM Transmission Electron Microscope
TENS Transcutaneous Electrical Nerve Stimulator
TERM TERMinal
TER Technical Education Resources
TES The Eulenspiegel Society
TES Thermal Emission Spectrometer (on Mars Observer)
TE Terminal Equipment
TE Transverse Electric
TET Test Environment Toolkit
TFC Total Full Color
TFLAP T-carrier Fault-Locating Applications Program
TFP Tops Filing Protocol
TFS Translucent File System
TFS Trunk Forecasting System
TFTB Topping From The Bottom
TFTP Trivial File Transfer Protocol
TFT The Fantasy Trip
TFT Thin Film Transistor
TGC Terminal Group Controller
TGIF Thanks God It's Friday
TGN Trunk Group Number
TG Thieves' Guild
TG TransGendered
TGV Two Guys and a Vax
THF TetraHydroFuran
THIEF THief/This Here Isn't Even Fine
THOR Tandy High-intensity Optical Recording
THOR THermal Optical Recording
THRUSH Technological Hierarchy for the Removal of Undesireables and Subjugation of Humanity
TH Trouble History
THX Tom Holman Xover
TIA Telephone Information Access
TIA Thanks In Advance
TIA Transient Ischemic Attack
TIC TermInfo Compiler
TIC Tongue in Cheek
TID Ter In Die (three times a day)
TIFF Tag(ged) Image File Format
TIGA Texas Instruments Graphics Architecture
TIMTOWTDI There Is More Than One Way To Do It
TINA This Is Not an Acronym
TINA TINA Is Not an Acronym
TINC There Is No Cabal
TIP Team Improvement Program
TIRKS Trunk Integrated Record Keeping System
TIROS Television InfraRed Observation Satellite
TI Texas Instruments [Corporate name]
TI Transport Independent
TKO Technical Knock Out
TK TeleKommunikation
TLA Three Letter Acronym
TLB Translation lookaside buffer
TLC Tender Loving Care
TLC Thin-Layer Chromatography
TLDR Too Long, Didn't Read
TLI Transport Level Interface (AT&T stream-based protocol)
TLM Trouble Locating Manual
TLN Trunk Line Network
TLP Transmission Level Point
TL Total Loss
TLTP Trunk Line and Test Panel
TLV Type, Length, Value
TMAC Treasury department's Multiuser Acquisition Contract
TMA Tycho Magnetic Anomaly [movie 2001]
TMDF Trunk Main Distributing Frame
TMIS Telecommunications Management Information System
TMI Too Much Information
TMJ Temporal-Mandibular-Joint (affects opening mouth)
TMMS Telephone Message Management System
TMO Telephone Money Order
TMPTAWWTLO The Missionary Position Twice a Week With the Lights Out
TMP The Morrow Project
TMRC Tech Model Railroad Club [MIT]
TMRC Transportation Modeling Research Center (TMRC {above} alter ego)
TMRS Traffic Measurement and Recording System
TMRS Traffic Metering Remote System
TMR Transient Memory Record
TMSC Tape Mass Storage Control (DEC)
TMS TetraMethylSilane; TriMethylSilyl
TMS Time-Multiplexed Switch
TM TradeMark
TM Transverse Magnetic
TNC Threaded Navy Connector
TNC Threaded Neill Concelman (connector) [electronics] (see also BNC)
TNDS Total Network Data System
TNN Trunk Network Number
TNOP Total Network Operation Plan
TNPC Traffic Network Planning Center
TN Telephone Number
TN Tennessee
TN Transaction Number
TNT The NeWS Toolkit
TNT TriNitroToluene
TN Twisted Nematic
TOCSY TOtal Correlation SpectroscopY
TOC Table Of Contents
TODS Transactions on Database Systems (ACM)
TOD Time-Of-Day
TOMS Total Ozone Mapping Spectrometer
TOMS Transactions on Mathematical Software (ACM)
TOOIS Transactions on Office Information Systems (ACM)
TOPICS Total On-Line Program and Information Control System (NHK)
TOPLAS Transactions on Programming Languages and Systems (ACM)
TOPS Timesharing OPerating System
TOPS Traffic Operator Position System
TOPS Transcendental OPerating System
TOP Technical/Office Protocol
TORES Text ORiented Editing System
TOS Terms Of Service / The Original Series
TOS The Operating System
TOS Transfer Orbit Stage [Space]
TOTBAL There Ought To Be A Law
TO Telegraph Office
TO Turn Over
TOW Tube launched, Optically tracked, Wire guided missile
TOY Time Of Year (clock)
TP0 OSI Transport Protocol Class 0 (Simple Class)
TP4 OSI Transport Protocol Class 4 (Error Detection and Recovery Class)
TPC The Phone Company [movie The President's Analyst)
TPE Total Power Exchange
TPE Twisted Pair Ethernet
TP from TP0 and TP4 (ISO/CCITT Transport Services; like TCP)
TPI Tracks Per Inch
TPMP Total network data system Performance Measurement Plan
TPM Third-Party Maintenance
TPO Traveling Post Office
TPPI Time-Proportional Phase Increment
TPS Technical Publication Software
TPS Technical Publishing Software
TPS TeleProcessing Services
TPS Thermal Protection System
TPS Transactions Per Second
TPTB The Powers That Be
TP Test Plan
TP Third Party
TP Toll Point
TP Transaction Processing
TP Transport Protocol
TPT Twisted Pair Transceiver
TP Twisted Pair
TQC Total Quality Control
TRAC Total Risk Analysis Calculation (SunTrac)
TREAT Trouble Report Evaluation Analysis Tool
TRIB Transfer Rate of Information Bits
TRMTR TRamsMiTteR
TROFF Text RunOFF, text formatter
TROFF Typsetter new ROFF
TRON The Real-time Operating Nucleus
TRON The Realtime Operating system Nucleus
TRR Tip-Ring Reverse
TRR Token Ring Repeater
TRSA Terminal Radar Service Area
TR Test Register
TR Token Ring
TR Transfer Register
TRUSIX TRUSted unIX
TRW Thompson, Ramo, and Woolridge
TSAP Transport Service Access Point
TSCPF Time Switch and Call Processor Frame
TSD Total System Design
TSDU Transport Service Data Unit
TSEL Transport Service Selector
TSE Technical Support Engineer (Sun)
TSI Time Slot Interchanger
TSM Tech Support Manager
TSORT Transmission System Optimum Relief Tool
TSO Technical Standard Order
TSO Time Sharing Option
TSPS Traffic Service Position System
TSP Teleprocessing Services Program
TSP Test SuPervisor
TSP Thrift Savings Plan
TSP Time Synchronization Protocol
TSP Traffic Service Position
TSP TriSodium Phosphate
TSR Terminate and Stay Resident
TSR Test Summary Report
TSR TSR (Fortune 500 Company that manufactures Dungeons & Dragons)
TSS Tethered Satellite System [Space]
TSS Time-Sharing System
TSS Trunk Servicing System
TSST Time-Space-Space-Time network
TS Top Secret
TSTO Two Stage to Orbit [Space]
TS TransSexual
TSTS Time-Space-Time-Space network
TST Time-Space-Time network
TST Traveling-Wave Tube
TTBOMK To The Best Of My Knowledge
TTC Telecommunications Technology Council
TTC Terminating Toll Center
TTD Things To Do
T tera- (SI prefix)
T tesla
TTFN Tah Tah, For Now
TTFN Ta Ta For Now
T Tip
TTL Time To Live
TTL Transistor-Transistor Logic
TTMA Tennessee Tech Microcomputer Association
T tonne(s), "t."
T ton(s), "t."
TTP Telephone Twisted Pair
TTP Trunk Test Panel
T Traveler
T tritium
TTS Trunk Time Switch
TTTN Tandem Tie Trunk Network
TT Trunk Type
TT Tunnels & Trolls, "T&T"
T tun(s), "t."
T2 T-carrier 2 (digital transmission line, 6.312 Mbps, 96 voice channels) [Telephony]
TTU Tennessee Technological University
T2YL Talk To You Later
T2UL Talk To You Later
TTUL Talk To You Later
TTYC TTY Controller
TTYL Talk To You Later
TTYTT To Tell You The Truth
TTY TeleTYpe(writer)
TUG TeX User's Group
TUNIS Toronto UNIversity System
TUR Traffic Usage Recording
TUR Trunk Utilization Report
TVA Tennessee Valley Authority
TV TeleVision
TVTWM Tom's Virtual TWM
TWA Trans World Airlines
TWG The Wollongong Group
TWIMC To Whom It May Concern
TWM Tab (or Tom's) Window Manager
TW Thieves' World
TWT Traveling Wave Tube
TWX TeletypeWriter eXchange
TXID Transuction Identifier
TX Texas
TX Transmit
TX Transuction
TY Thank You
TYT Take Your Time
TYVM Thank You Very Much
UAB UNIX Appletalk Bridge
UAE Unexpected Application Error
UAE United Arab Emerates
UAF User Authorization File
U&A(&LI) Used and Abuse (and Loving It)
UAPDU User Agent Protocol Data Unit
UARS Upper Atmosphere Research Satellite
UART Universal Asynchronous Receiver and Transmitter
UAR United Arab Republic
UAR User Action Routine
UA United Artists
UA User Agent
UBA UniBus Adapter [DEC]
UBC Universal Bibliographic Control
UBC University of British Columbia
UBM Unpressurized Berthing Mechanism
UCAR University Corporation for Atmospheric Research
UCB University of California at Berkeley
UCC Uniform Commercial Code
UCD Uniform Call Distribution
UCD University of California at Davis
UCI University of California at Irvine
UCLA University of California at Los Angeles
UCL Underwater Sound Laboratory
UCL University College London
UCR University of California at Riverside
UCSB University of California at Santa Barbara
UCSC University of California at Santa Cruz
UCSD University of California at San Diego
UCSF University of California at San Francisco
UC University of CA
UC Upper Case, "u.c."
UDB Unified DataBase
UDF User Defined Function
UDMH Unsymmetrical DiMethyl Hydrazine
UDP User Datagram Protocol
UDT User Defined Type
UEC User Environment Component
UFO Unidentified Flying Object
UFS Universal File System
UGC Uppsala General Catalog
UG Micro-Grip (HP plotter paper positioner)
UHF Ultra High Frequency (300-3000MHz)
UHF Unrestricted Hartree-Fock
UH Upper Half
UIC User Identification Code
UID User IDentity
UIL User Interface Language
UIMS User Interface Management System
UIP User Interface Program
UITP Universal Information Transport Plan
UIT Ultraviolet Imaging Telescope (Astro package)
UIUC University of Illinois at Urbana-Champaign
UI Unix International
UI User Interface
UKST United Kingdom Schmidt Telescope
UK United Kingdom
ULANA Unified Local-Area Network Architecture
UL Underwriters Laboratory
UMA Upper Memory Area
UMB Upper Memory Blocks
UMT Universal Military Training
UNCLE United Network Command for Law Enforcement
UNESCO United Nations Educational, Scientific, & Cultural Organization
UNICEF United Nations International Children's Emergency Fund (now UN Child. Fund)
UNICS UNiplex Information Computer Services
UNISTAR UNIversal Single call Telecommunications Answering & Repair
UNIVAC UNIversal Automatic Computer
UNIX not an acronym at all. Was a pun on MIT's MULTICS.
UNMA Unified Network Management Architecture
UNO United Nations Organization
UN United Nations
UPC Universal Product Code
UPDS Uninterruptible Power Distribution System
UPI United Press International [Corporate name]
UPN Umgekehrte Polnische Notation (RPN)
UPS Uninterruptible Power Supply
UPS United Parcel Service [Corporate name]
UP Union Pacific (railroad) [Corporate name]
UP Upper Peninsula (of Michigan)
U (representing the greek mu) - micro, "u"
UREP UNIX-RSCS Emulation Program (BITNET software for UNIX)
UR University of Rochester
USAC United States Answer Center
USAC United States Auto Club
USAC US Answer Center (Sun Hotline)
USAFA United States Air Force Academy (in Colorado Springs)
USAF United States Air Force
USAN University Satellite Network
USART Universal Synchronous Asynchronous Receiver/Transmitter
USA Union of South Africa
USA United States Army
USA United States of America
USB Upper Side Band
USCA United States Code, Annotated
USCG United States Coast Guard
USC University of Southern California
USDA United States Department of Agriculture
USD Underwriters Safety Device
USENET USErs' NETwork
USES United States Employment Service
USFL United States Football League
USGS United States Geological Survey
USG Unix Support Group
USHGA United States Hang Gliding Association
USIA United States Information Agency
USITA United States Independent Telephone Association
USL Unix System Laboratories
USMC United States Marine Corps
USMP United States Microgravity Payload
USM United States Mail
USN United States Navy
USOC Universal Service Order Code
USO United Service Organizations
USO Universal Service Order
USO Unix Software Operation
USPS United States Postal Service
USPTO United States Patent and Trademark Office
USP United States Pharmacopeia
USP Universal Sampling Plan
USRT Universal Synchronous Receiver/Transmitter
USR User Service Routines
USSR Union of Soviet Socialist Republics
USSS User Services and Systems Support
USS United States Ship
US United States (of America)
USV Unterbrechungsfreie StromVersorgung
USW Und So Weiter
UTC Universal Coordinated Time
UTE Union Technique de i"Electricite"
UTP Unshielded Twisted Pair
UTQGS Uniform Tire Quality Grading System
UTR UpTime Ratio
UTSL use the source, Luke
UT Universal Time
UT University of Tennessee
UT University of Texas
UT UTah
UUCICO Unix to Unix Copy Incoming Copy Outgoing
UUCP Unix-to-Unix CoPy
UUG Unix User Group
U unified atomic mass unit, "u"
U Universe
U uranium
UUT Unit Under Test
UVS UltraViolet Spectrometer
UV UltraViolet
UWCSA University of Washington Computer Science Affiliates
UWS Ultrix Workstation Software
UW UnderWriter
UW University of Wisconsin
VABIS Vagn Aktie Bolaget i Soedertaelje (Swedish truck company)
VAB Value Added Business
VAB Vehicle Assembly Building (formerly Vertical Assembly Building)
VAC Volts of Alternating Current
VADS Verdix Ada Development System
VAD Value Added Dealer
VAFB Vandenberg Air Force Base
VANS Value-Added Network Services
VAN Value-Added Network (e.g. Tymnet, Telenet, etc)
VAP Value-Added Process
VAR Value-Added Remarketer/Reseller
VASCAR Visual Average Speed Computer And Recorder
VASI Visual Approach Slope Indicator
VAST Virtual Archive Storage Technology
VAT Value Added Tax
VA Veterans Administration
VA Virginia
VAV Value Application Venders
VAXBI VAX Bus Interconnect
VAX Virtual Address eXtended
VBG Very Big Grin
VB Valence Bond
VB Venture Business
VCCI Volantary Control Council for Intersive
VCM Voice Coil Motor
VCO Voltage Controlled Oscillator
VCPI Virtual Control Program Interface
VCR VideoCassette Recorder
VCS Virtual Circuit System
VCU Virginia Commonwealth University
VC Virtual Circuit
VDC Volts of Direct Current
VDE Verband Deutscher Electrotechniker
VDFM Virtual Disk File Manager
VDI Virtual Device Interface
VDM Vienna Development Method
VDM Virtual Device Metafile
VDS Virtual DMA Services
VDT Video Display Terminal
VD Venereal Disease (see also STD)
VEEGA Venus-Earth-Earth Gravity Assist (Galileo flight path)
VEG very evil grin
VESA Video Electronics Standards Association
VEU Volume End User
VE Value Engineering
VEX Video Extension to X
VFEA VMEbus Futurebus+ Extended Architecture
V fiVe
VFO Variable Frequency Oscillator
VFR Visual Flight Rules
VFS Virtual File System
VF Video Frequency
VF Voice Frequency
VFW Veterans of Foreign Wars
VFW Volunteer Fire Department
VFY VeriFY
VGA Video Graphics Array/Accelerator
VGF Voice Grade Facility
VGI Virtual Graphics Interface
VG Very Good
VG Vicar-General
VHDL Vhsic Hardware Description Language
VHD Video High Density
VHF Very High Frequency (30-300MHz)
VHSIC Very High Speed Integrated Circuit
VHS Video Home System (VCR)
VIABLE Vertical Installation Automation BaseLinE
VIC V.35 Interface Cable
VIFRED VIsual FoRms EDitor
VILE VI-Like Emacs
VINES VIrtual NEtwork Software
VINE Vine Is Not Emacs
VIP Very Important Person
VISTA Volunteers In Service To America
VITA Vme International Trade Association
VIU Voiceband Interface Unit
VI VIsual editor
VJ Video Jockey
VLA Very Large Array radio telescope in Arizona or New Mexico
VLBA Very Long Baseline Array
VLBI Very Long Baseline Interferometry
VLF Very Low Frequency (3-30KHz)
VLIW Very Long Instruction Word
VLSI Very Large Scale Integration
VLT Very Large Telescope
VL Vulgar Latin
VMCF Virtual Machine Communications Facility
VMCMS Virtual Machine/Conversational Monitor System, "VM/CMS"
VMC Visual Meteorological Conditions
VME Versabus Module Europe
VME Versa Modular Europa
VME Virtual Machine Environment
VMM Virtual Memory Manager
VMOS Vertical Metal Oxide Semiconductor (V-MOS) (see MOS)
VMRS Voice Message Relay System
VMR Vertical Market Reseller
VMR Volt-Meter Reverse
VMSP Virtual Machine/System Product, "VM/SP"
VMS Vertical Motion Simulator
VMS Virtual Memory operating System
VMS Virtual Memory System
VMS Voice Mail System
VMS Voice Management System
VMTP Versatile Message Transaction Protocol
VM Virtual Machine
VM Virtual Memory
VNF Virtual Network Feature
VNLF Via Net Loss Factor
VNL Via Net Loss plan
VNY Van Nuys CA
VOA Voice Of America
VOA Volunteers Of American
VODAS Voice Over Data Access Station
VOIR Venus Orbiting Imaging Radar (superseded by VRM)
VOIS Voice-Operated Information System
VOQ Visiting Officer's Quarters
VORT Very Ordinary Rendering Toolkit
VOR VHF Omnidirectional Range
VPF Vertical Processing Facility
VPISU Virginia Polytechnic Institute and State University, "VPI&SU"
VPN Virtual Private Network
VP View Processor
VP Virtual President
VRAM Video-RAM
VRC Vertical Redundancy Character
VRM Venus Radar Mapper (now called Magellan)
VRM Virtual Resource Manager
VRM Voice Recognition Module
VROOMM Virtual Realtime Object Oriented Memory Manager
VRS Voice Response System
VR Variety Reduction
VSAM Virtual Sequential Access Method
VSAM Virtual Storage Access Method
VSAT Very Small Aperture Terminal, satellite dish
VSA Virtual Server Architecture
VSB Vestigial SideBand modulation
VSE Virtual Storage Extended
VSP Vector/Scalar Processor
VSR Voice Storage and Retrieval
VSSP Voice Switch Signaling Point
VSS Voice Storage System
VS VAXStation
VSX X/open Verification Suite
VTAM Virtual Telecommunications Access Method [IBM]
VTI Virtual Terminal Interface
VTOC Volume Table Of Contents
VTOL Vertical TakeOff and Landing
VTP Virtual Terminal Protocol
VTR VideoTape Recorder
VTS Video Teleconferencing System
VTS Virtual Terminal Service
VT Virtual Terminal
VUIT Visual User Interface Tool
VUP Vax Unit of Performance
VU Volume Unit
V vanadium
V Vergeltungswaffe (reprisal weapon: V1, V2)
V version, "v"
V versus, "v."
V volt(s)
VVSS Vertical Volute Spring Suspension
VV Villains & Vigilantes, "V&V"
VWS VAX Workstation Software
VXI VMEbus Extension for Instrumentation
WAC Womens Air Corps
WADS Wide Area Data Service
WAG Wild-Assed Guess
WAIS Wide Area Information Server
WAN Wide Area Network
WAP Wissenschaftliche ArbeitsPlatzrechner
WAP Work Assignment Procedure
WARC World Administrative Conference
WATFOR WATerloo FORtran
WATSUP WATfor Student Utility Program
WATS Wide Area Telephone Service
WA Washington
WA Western Australia
WBC White Blood Cells
WBS Wednesday Business School
WBS Work Breakdown Structure
WB Water Ballast
WB WayBill
WB Welcome Back
WCL Widget Creation Library
WCPC Wire Center Planning Center
WCS Writable Control Store (VAX)
WCTU Women's Christian Temperance Union
WC Water Closet
WC Wire Center
WC Without Charge
WDC Washington, District of Columbia
WDC Work Distribution Chart
WDM wavelength-division multiplexing, for optical fibre, ultra-gigabit
WDT Watch Dog Timer
WD White Dwarf
WD Working Draft
W/E Whatever
WELL Whole Earth 'Lectronic Link
WFM Works For Me
WFPCII Replacement for WFPC
WFPC Wide Field / Planetary Camera (on HST)
WF Work Factor method
WGS WorkGroup System (AT&T's 386 PC)
WG Working Group
WHBL World Home Bible League
WHOI Woods Hole Oceanographic Institution
WHO World Health Organization
WHSE Warehouse
WHSGNASBN We Have Some Good News And Some Bad News
WH WarHammer
Wiitwd(h) What it is that we do (here)
WINS Wollongong Integrated Networking Solutions
WIN WIssenschaftsNetz
WIP Work-In-Process
WIS WWMCCS Information System
WITS Washington Interagency Telecommunications System
WI Wisconsin
WIYN Wisconsin / Indiana / Yale / NOAO telescope
WKS Well Known Services
WLN Wiswesser Line Notation
WMF Windows MetaFile
WMO World Meteorological Organization
WMSCR Weather Message Switching Center Replacement
WM Work Manager
WNIM Wide area Network Interface Module
WNN Watashi no Namae ha Nakajima desu. (Kana-Kanji henkan), "Wnn"
WOA Work Of Art
WOB Waste Of Bandwidth
WOMBAT Waste Of Money, Brains, And Time
WOPR War Operations Planned Response (from "Wargames" movie)
WORM Write Once, Read Many time
WOSA Windows Open System Architecture
WO Write Only
WOW Worlds of Wonder
WPS Word Processing Software
WP Word Processing
WP Working Paper
WRT Whitewater Resource Toolkit
WRT With Respect/Regard To
WSD Work Station Division
WSI Wafer Scale Integration
WSJ Wall Street Journal
WSMR White Sands Missile Range
WSN Wirth Syntax Notation
WSP Work Simplification Program
WS Water Sports (see GS)
WS Work Sampling
WS Work Station
WSW West-SouthWest
WTF {What,where,who,why} The Fuck
WTH {What,where,who,why} The Hell
WTR Western Test Range
WUPPE Wisconsin Ultraviolet PhotoPolarimter Experiment (Astro package)
WU Washington University
WU Western Union
WV West Virginia
WW2 World War II
W Wales/Welsh
W watt
W Wednesday, "W."
W week(s), "w."
W West
WWFO World Wide Field Operations
W Width
WWII World War II
WWI World War I
WWMCCS World-Wide Military Command and Control System
W wofram (tungsten)
WWOPS World-Wide Operations
WW World War
WYSIWIS What You See Is What I See
WYSIWYG What You See Is What You Get
WY Wyoming
X25 CCITT recommendation for packet switched networks DTE interfacing, "X.25"
XA eXtended Architecture (31-bit addressing in IBM machines)
XBT X-Bar Tandem
XB X-Bar
XCF eXperimental Computing Facility
XCMOS eXtended CMOS
XD eX (without) Dividend
XDMCP X Display Manager Control Protocol
XDR eXternal Data Representation
XD without Dividend
XFER transFER (the X is for trans)
XFE X-Front End
XGA eXtended Graphics Adapter
XGMC Xiphias Gladius Memorial Clique
XID eXchange IDentification
XIE X Imaging Extension
XIM X Input Method
XINU Xinu Is Not UNIX
XL eXtra Large
XLFD X Logical Font Description
XMI eXtended Memory Interconnect (DEC)
XMM X-ray Multi Mirror
XMPP eXtensible Messaging and Presence Protocol
XMS eXtended Memory Specification
XMS eXtended Multiprocessor operating System
XMTR transMiTteR (the X is for trans)
XNS Xerox Network Services/Systems/Standard
XO eXecutive Officer
XOR eXclusive OR (logical function)
XPG2 X/Open Portability Guide Release-2
XPG3 X/Open Portability Guide Release-3
XPG X/Open Portability Guide
XP Jesus Christ (from the first two letters of "Christ" written in Greek)
XPORT transPORT (the X is for trans)
XRM X Resource Manager
XSECT cross SECTion (the X is for cross)
XTAL crysTAL (another version of x for crys, see XMTR)
XTAL crysTAL (the X is for crys)
XTC eXternal Transmit Clock
XT eXtended Technology
XT X.11 Toolkit, "Xt"
XUI X-windows User Interface
XUV eXtreme UltraViolet
XVIEW X window system-based Visual/Integrated Environment for Workstations
XWSDS X Window System Display Station
YACC Yet Another Compiler Compiler
YAFIYGI You Asked For It, You Got It
YA Yet Another
YB YearBook
YGM You Got Mail
YHBT You Have Been Trolled
YHL You Have Lost
YKINMK Your Kink Is Not My Kink
YKINOK Your Kink Is Not Okay
YKIOK,IJNMK Your Kink is OK, It's Just Not My Kink
YKWIM You Know What I Mean
YMBJ You Must Be Joking
YMCA Young Mens Christian Association
YMHA Young Mens Hebrew Association
YMMV your mileage may vary
YMMV Your Mileage May Vary
YOB Year Of Birth
YPVS Yamaha Power Valve System
YP Yellow Pages
YRS Ysgarth Rules System
YSO Young Stellar Object
YST Yukon Standard Time
YTD Year To Date
YT Yukon Territory
YT Yukon Time
YWCA Young Womens Christian Association
YWHA Young Womens Hebrew Association
YW You're Welcome
Y Year, "y."
Y Yen
Y yttrium
YY Year
ZBB Zero Base Budgeting
ZBR Zone Bit Recording
ZB Zero Beat
ZD Zero Defect
ZETA Zero Energy Thermonuclear Assembly
ZFS Zero-Field Splitting
ZGS Zero Gradient Synchrotron
ZG Zero Gravity
ZIB Konrad-Zuse-Zentrum fuer Informationstechnik Berlin
ZIF Zero Insertion Force
ZIP Zig-zag Inline Pin
ZIP Zone Improvement Plan (post office code)
ZIP Zone Information Protocol
ZI Zonal Index
ZK barrage balloon (navy symbol)
ZMRI Zinc Metals Research Institute
ZPG Zero Population Growth
ZPRSN Zurich Provisional Relative Sunspot Number
ZQC Zero-Quantum Coherence
ZST Zone Standard Time
ZT Zone Time
ZWEI Zwei Was Eine Initially
Z Zenith
Z Zero
ZZF Zentralamt zur Zulassung von Fernmeldeeinrichtungen