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General AcronymsHere's a list of over 2,500 acronyms. If you happen to be looking for the Chat and Usenetacronyms instead, then please Click Here for that page.

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A

2D 2-Dimensional3D 3-Dimensional

3M Minnesota Mining and Manufacturing4GL Fourth Generation Language4H Head, Heart, Hands, HealthA AftermathA&M Agricultural and MechanicalA/D Analog to Digital converter (see ADC)A/P Accounts PayableA/R Accounts ReceivableAA Affirmative Action committeeAA Alcoholics AnonymousAA Antiaircraft ArtilleryAA Associate in AccountingAA Automobile Association (in England)

AAA American Automobile AssociationAAAL American Academy of Arts and LettersAAAS American Association for the

Advancement of ScienceAAII American Association of Individual InvestorsAAMSI American Association for

Medical Systems InformaticsAAP Affirmative Action ProgramAARC Anglo-American Cataloging RulesAB ABle seaman

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ABA American Bar AssociationABA American Basketball AssociationABA American Booksellers AssociationABBR ABBReviationABC American Broadcasting CompanyAC Alternating Current (ac, see also DC)AC Ante Christum (before Christ)AC Ante Cibum (before meals)ACAA Agricultural Conservation and

Adjustment AdministrationACAWS Advisory, Caution, And Warning SystemACBL American Contract Bridge LeagueACC Argonne Code CenterACCS Army Command and Control SystemACD Automatic Call Distributing systemACE Automatic Calibration and EqualizationACHEFT Automated ClearingHouse Electronic

Funds TransferACK ACKnowledgeACL Advanced Cmos Logic

ACM Association for Computing MachineryACO Acronym Control OfficerACS Advanced Communications SystemACTS Advanced Communications Technology SatelliteACTS Automatic Coin Telephone ServiceACU Alarm Control UnitACW Alternating Continuous WavesAD After DateAD Anno Domini (in the year of our Lord)AD Application DevelopmentAD&D Advanced Dungeons & DragonsADB A DeBugger ADB Apple Desktop Bus

ADC Analog to Digital ConverterADCI Automatic Display Call IndicatorADF Automatic Direction FinderADM ADMiralADP Adenosine Di-PhosphateADP Administrative Data ProcessingADP Advanced Data ProcessingADS Application Development SystemADS Automatic Voice SystemADSR Attack Decay Sustain ReleaseADT Abstract Data TypeADT Atlantic Daylight TimeAE Application Execution

AEA American Electronics AssociationAEC Atomic Energy CommissionAEF American Expeditionary Force (see BEF)AEGIS Advanced Electronic Guidance and

Instrumentation SystemAF Adventures in FantasyAF Air ForceAF Audio FrequencyAFADS Automatic Force Adjustment Data SystemAFATDS Advanced Field Artillery Tactical Data System

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AFB Air Force BaseAFC American Football ConferenceAFC Automatic Flight ControlAFC Automatic Frequency ControlAFCAC Air Force Computer Acquisition CenterAFCC Air Force Communications CommandAFGE American Federation of Government EmployeesAFIPS American Federation of Information

Processing SocietiesAFL American Federation of LaborAFL American Football LeagueAFLCIO American Federation of Labor and Congress of

Industrial OrganizationsAFNOR Association Francaise de NORmalizationAFP Appletalk Filing ProtocolAFS Andrew File SystemAFSC Air Force Systems CommandAFSCME American Federation of State, County and

Municipal EmployeesAFTRA American Federation of Television and

Radio ArtistsAG Adjutant GeneralAG Arcade GameAG Attorney GeneralAGCT Army General Classification TestAH Avalon Hill (major war game manufacturer)AHL American Hockey LeagueAHQ Air HeadQuartersAI Artificial IntelligenceAIAA American Institute of Aeronautics

and AstronauticsAIC Automatic Intercept CenterAID Agency for International Development

AIDDE Ames' Interactive Dynamic Display EditorAIDS Acquired ImmunoDeficiency SyndromeAIOD Automatic Identification Outward DialingAIS Automatic Intercept SystemAIX Advanced Interactive eXecutive (unix)AK AlaskaAKA Also Known AsAL AlabamaAL American League (baseball)ALA American Library AssociationALA Automobile Legal AssociationALBM Air-to-Land Ballistic MissileALC Automatic Load Control

ALGOL ALGOrithmic LanguageALU Arithmetic Logic UnitAM Amplitude ModulationAM Ante Meridiem (before noon)AMA American Medical AssociationAMA Automatic Message AccountingAMARC Automatic Message Accounting Recording CenterAMBA Association of Master of Business AdministrationAMC Albany Medical CollegeAMD Advanced Micro Devices

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AMEX AMerican EXpressAMORC Ancient Mystic Order Rosae CrucisAMP Adenosine MonoPhosphateAMPAS Academy of Motion Picture Arts and SciencesAMRAAM Advanced Medium Range Air-To-Air MissileAMSAT radio AMateur SATellite corp.AMU Atomic Mass UnitAMVET AMerican VETeranANA American Nurses AssociationANC All Number CallingANC Army Nurse CorpsANDF Architecture-Neural Distribution FormatANF Automatic Number ForwardingANG Air National GuardANI Automatic Number IdentificationANL Argonne National LaboratoryANOVA ANalysis Of VArianceANPA American Newspaper Publishers AssociationANSI American National Standards InstituteANZUS Australia, New Zealand, United States

AO Account Of AOL America On Line, Absent Over Leave (see AWOL)AOS Academic Operating SystemAP Additional PremiumAP All PointsAP Associated PressAPA All Points AddressableAPB All Points BulletinAPDA Apple Programmers and Developers AssociationAPI Application Programming InterfaceAPICS American Production and Inventory

Control SocietyApJ Astrophysical Journal

APO Army Post OfficeAPP Applications Portability ProfileAPPC Advanced Peer-to-Peer CommunicationsAPR Annual Percentage Rate (as in loan interest)APSE Ada Programming Support EnvironmentAQ Accumulator-Quotient registerAR Address Register AR ArkansasARC American Red CrossARCNET Attached Resource Computer local area NETworkARO After Receipt of OrderARPA Advanced Research Projects AgencyARPANET Advanced Research Projects Agency NETwork

ARRL Amateur Radio Relay LeagueARV American Revised VersionAS Anglo-SaxonASA Acetyl Salicylic AcidASAP As Soon As PossibleASC Accredited Standards CommitteeASCAP American Society of Composers, Authors,

and PublishersASCC Automatic Sequence-Controlled CalculatorASCII American Standard Code for

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Information InterchangeASDIC Anti-Submarine Detection Investigation

Committee (British for sonar)ASDSP Application-Specific Digital Signal ProcessorASG Automated Sciences GroupASHRAE Amer. Soc. of Heating, Refrigerating

and Air-cond. Engineers, inc.ASIC Application Specific Integrated CircuitASME American Society of Mechanical EngineersASP Aggregated Switch ProcurementASSR Autonomous Soviet Socialist RepublicAST Atlantic Standard TimeASV American Standard VersionAT Atlantic TimeAT&T American Telephone & TelegraphATA Automatic Trouble AnalysisATACC Advanced Tactical Air Command CentralATB Advanced Technology Bomber (stealth bomber)ATC Air Traffic ControlATF Advanced Technology Fighter

ATIS Atherton Tools Interface SpecificationATM Automatic Teller MachineATOMS AT&t Optimized Materials SimulatorATP Adenosine TriPhosphateATPCO Airline Tariff Publishing COmpanyATTIS American Telephone and Telegraph

Information SystemsATV All Terrain VehicleAUS Army of the United StatesAUTODIN AUTOmatic DIgital NetworkAUTOVON AUTOmatic VOice NetworkAV AudioVisualAVLIS Atomic Vapor Laser Isotope Separation

AWACS Airborne Warnings And Control SystemsAWEA American Wind Energy AssociationAWK al Aho, peter Weinberger, brian Kernighan

(pattern scanning language)AWOL Absent WithOut Leave (also Absent

Without Official Leave) (see AOL)

B

B BookBA Bachelor of Arts

BACH Business Alliance for Commerce in HempBAFO Best And Final OfferBASIC Beginner's All-purpose Symbolic

Instruction CodeBB Bases on BallsBB Best of BreedBB Bunnies and BurrowsBBA Bachelor of Business AdministrationBBB Better Business BureauBBC British Broadcasting Corporation

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BBL BarrelBBN Bolt, Beranek, and NewmanBC BattlecarsBC Before ChristBC British ColumbiaBC/BS Blue Cross/Blue ShieldBCD Bad Conduct DischargeBCD Binary Coded DecimalBCDIC Binary Coded Decimal Interchange CodeBCE Before the Common Era (substitute for BC)BCP Byte Controlled ProtocolsBCPL Basic Combined Programming LanguageBCS Bachelor of Commercial ScienceBCS Binary Compatibility StandardBCS Boston Computer SocietyBCS British Computer SocietyBD Bachelor of DivinityBD Bank DraftBD Bills DiscountedBD&D Basic Dungeons & Dragons

BDF Binary Distribution FormatBDT Billing Data TransmitterBE Bill of ExchangeBEF British Expeditionary Force (see AEF)BELCORE BELL COmmunications REsearchBEM Bug Eyed MonsterBENELUX BElgium, NEtherlands, and LUXembourgBER Bit Error RateBEST Borland Enhanced Support and TrainingBF Brought ForwardBFA Bachelor of Fine ArtsBFD Big F***ing DealBFHD Big Fat Hairy Deal

BH Boot HillBHP Brake HorsePowerBICS Building Industry Consulting ServicesBID Bis In Die (twice a day)BIOC Break Into Other ComputersBIOS Basic Input Output SystemBIS Business Information SystemBLAST BLocked ASynchronous TransmissionBLF Busy Line FieldBLT BLock Transfer BLT Bacon, Lettuce, and TomatoBM Basal MetabolismBM Bowel Movement

BMA Bank Marketing AssociationBMEWS Ballistic Missile Early WarningBMO Ballistic Missile OfficeBMOC Big Man On CampusBMR Basal Metabolism RateBNF Bachus-Naur FormBO Body Odor BO Branch OfficeBO Buyer's OptionBOC Bell Operating Company

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BOD Board Of DirectorsBOF Birds Of a FeatherBOM Bill Of MaterialsBOQ Bachelor Officers' QuartersBOS Business Office SupervisorBOSIX Biin Open System Interface eXtensionBP Blood PressureBP British PharmacopoeiaBPI Bits Per InchBPOE Benevolent and Protective Order of ElksBPS Bits Per SecondBR Bills ReceivableBR British RailBRIEF Basic Reconfigurable Interactive

Editing FacilityBRL army Ballistic Research LaboratoryBRS Bibliographic Retrieval ServiceBS Bachelor of ScienceBS Bill of SaleBSA Birmingham Small Arms

BSA Boy Scouts of AmericaBSC Binary Synchronous CommunicationBSD Berkeley Software DistributionBSN Bachelor of Science in NursingBSS Block Started by SymbolBSTJ Bell System Technical JournalBSc Bachelor of SCienceBTL Bell Telephone LaboratoriesBTO Bachman Turner OverdriveBTU British Thermal UnitBTW By The WayBThU British Thermal UnitBU Bushido

BV Blessed VirginBWI Baltimore-Washington International (airport)BWI British West IndiesBX Base eXchange (see PX)Bit BInary digiT

C

C programming language, successor to BCPLC&S Chivalry & SorceryC/O in Care Of

CA CaliforniaCA Chartered AccountantCA Chief AccountantCA Chronological AgeCAB Civil Aeronautics BoardCACM Communications of the Association

for Computing MachineryCAD Computer Aided Design (sometimes seen as CAD/CAM)CAE Common Applications EnvironmentCAE Computer Aided Engineering

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CAIS Common Apse Interface SpecificationCALS Computer-aided Acquisition and Logistics SupportCAM Computer Aided ManagementCAM Computer Aided Manufacturing (sometimes

seen as CAD/CAM)CAM Content Addressable MemoryCAMA Centralized Automatic Message AccountingCAMP Campaign Against Marijuana PlantingCAP Civil Air PatrolCAP Columbia Appletalk PackageCAR Contents of the Address part of the RegisterCASE Computer Aided Software EngineeringCASSIS Classification and Search Support

Information SystemCAT Computer-Aided TomographyCATIS Common Applications and Tools

Integration ServicesCATV Community Antenna TeleVisionCAVU Ceiling And Visibility UnlimitedCB Citizens Band radio

CBC Canadian Broadcasting CorporationCBD Cash Before DeliveryCBD Commerce Business DailyCBEMA Computer & Business Equipment

Manufacturers AssociationCBR Chemical, Biological, Radiological warfareCBS Columbia Broadcasting SystemCBW Chemical and Biological WarfareCC Carbon CopyCCA Computer Corporation of AmericaCCC Canadian Committee on CatalogingCCC Civil(ian) Conservation CorpsCCC Command, Control, and Communications

CCCCM CCC CounterMeasures (sometimes C^3CM)CCCI Command, Control, Communications,

and IntelligenceCCD Charge Coupled Device (see CID)CCI Computer Carrier InterruptCCI Computer Consoles, IncorporatedCCIP Continuously Computed Impact PointCCIS Common Channel Interoffice SignalingCCITT Comite' Consultatif International

Telegraphique et TelephoniqueCCR Commitment, Concurrency, and RecoveryCCR Creedence Clearwater RevivalCCRP Continuously Computed Release Point

CCSA Common Control Switching ArrangementCCTA Central Computer and Telecommunications AgencyCCTV Closed Circuit TeleVisionCD Certificate of DepositCD Civil DefenseCD Compact DiskCD-ROM Compact Disk Read Only MemoryCDA Call Data AccumulatorCDA Compound Documents ArchitectureCDC Centers for Disease Control

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CDC Control Data Corporation, inc.CDEV Control panel DEViceCDIAC Carbon Dioxide Information Analysis CenterCDO Community Dial OfficeCDR CommanDeRCDR Contents of the Decrement part of the RegisterCDT Central Daylight TimeCDU Control Display UnitCE Chemical Engineer CE Civil Engineer CE Common Era (substitute for AD)CE Corps of EngineersCE Customer Engineer CEA Council of Economic AdvisorsCEA County Education AuthorityCEC Commission of the European CommunitiesCED Committee for Economic DevelopmentCENS Centre d'Etudes Nucleaires de SeclayCENTO CENtral Treaty OrganizationCEO Chief Executive Officer

CERN organisation (formerly Conseil) Europeenne pourla Recherche Nucleaires

CERT Computer Emergency Response TeamCEVI Common Equipment Voltage IndicatorCF Carry ForwardCF Coin First payphoneCFC Chloro-FluoroCarbonCFC Combined Federal CampaignCFD Computational Fluid DynamicsCFI Cost, Freight, and InsuranceCFL Canadian Football LeagueCFO Chief Financial OfficerCG Coast Guard

CG Commanding GeneralCG&E Cincinnati Gas & ElectricCGA Color Graphics AdapterCGCT Compagnie Generale de Constructions

TelephoniquesCGE Compagnie Generale d'ElectriciteCH Cardboard HeroesCH ClearingHouseCH CourtHouseCH Customs HouseCHA ChampionsCHAP CHAnnel ProcessorCHI Chill: Adventures into the Unknown

CHOTS Corporate Headquarters OfficeTechnology SystemCHP California Highway PatrolCI Cubic InchesCIA Central Intelligence AgencyCICA Competition in Contracting ActCICS Customer Information Control SystemCID Central Institute for the DeafCID Charge Injection Device (see CCD)CID Computer Integrated Design

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CIDIN Common Icao Data Interchange NetworkCIM Computer Integrated ManufacturingCIO Chief Information OfficerCISC Complex Instruction Set ComputerCIT California Institute of TechnologyCIT Case Institute of Technology (part of

CWRU, Cleveland, OH)CLASP Comprehensive Logistics Automated

Support ProgramCLI Command Line InterpreterCLR Combined Line and RecordingCLRC Circuit Layout Record CardCLU Chartered Life UnderwriterCLUT Color LookUp TableCM Congregation of the MissionCMC Communication Machinery Corp.CMD Centralized Message DistributionCML Current Model LogicCMMU Cache/Memory Management UnitCMOS Complementary Metal Oxide

Semiconductor (see MOS)CMRR Common Mode Rejection RatioCMS Circuit Maintenance SystemCMSgt Chief Master SergeantCMU Carnegie-Mellon UniversityCMYK Cyan, Magenta, Yellow, blacKCN Canadian National (railways)CN/A Customer Name / AddressCNN Cable News NetworkCNO Chief of Naval OperationsCNR Canadian National RailwaysCNR Carrier to Noise RatioCNS Central Nervous System

CO Cash Order CO Central OfficeCO Central Office (telephony)CO ColoradoCO Commanding Officer CO Conscientious ObjectorCOB Close Of BusinessCOBOL COmmon Business Oriented LanguageCOC Call of CthulhuCOD Collect On Delivery, Cash On DeliveryCODEC COder-DECoder COER Central Office Equipment ReportCOLA Cost-Of-Living Allowance

COMAS Central Office Maintenance andAdministration SystemCOMPACT COMmercial Product ACquisition TeamCONS Connection-Oriented Networking SessionCORE COntrolled Requirement ExpressionCORN COmputer Resource NucleusCOS Corporation for Open SystemsCOSMIC COmmon System Main InterConnecting frameCOSMIC COmputer Software Management and

Information Center

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COSMOS COmputer System for Mainframe OperationSCP Canadian PacificCP Chemically PureCP CoPyCP Command PostCP Command Processor CP the Canadian PressCPA Certified Public AccountantCPFF Cost Plus Fixed FeeCPI Characters Per InchCPI Common Programming InterfaceCPL Combined Programming LanguageCPM Control Program for

Microcomputers (sometimes CP/M)CPO Chief Petty OfficerCPO Chief Post OfficeCPO Customer Premises EquipmentCPR Canadian Pacific RailwayCPS Characters Per SecondCPSR Computer Professionals for Social Responsibility

CPT CaPTainCPU Central Processor UnitCPW Certified Public WeigherCQ Change of QuartersCQ Charge of QuartersCR Carriage Return (ASCII 15 octal)CRAM Card Random Access MemoryCRC Chemical Rubber CompanyCRC Cyclical Redundancy CharacterCREG Concentrated Range Extension with GainCRT Cathode Ray Tube (also generic reference

to a terminal)CRTC Canadian Radio-television and

Telecommunications CommissionCS Civil ServantCS Computer Science, Computing ScienceCS County SeatCSA Confederate States of AmericaCSAB Computing Sciences Accreditation BoardCSACS Centralized Status, Alarm and Control SystemCSC Computer Sciences CorporationCSDC Circuit Switched Digital CapabilityCSF Critical Success FactorCSI Commercial Systems IntegrationCSIS Canadian Security and Intelligence ServiceCSL Coin Supervising Link

CSM Command Sergeant MajorCSMA/CD Carrier SenseMultiple Access/Collision Detection

CSO Central Services OrganizationCSOC Consolidated Space Operations Center

(at Colorado Springs)CSP Control Switching PointCSR Control and Status RegisterCSRG Computer Systems Research GroupCSRS civil Service Retirement System

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CSS Customer Switching SystemCST Central Standard TimeCT Central TimeCT ConnecticutCTC Canadian Transport CommissionCTC Centralized Traffic Control (railways)CTD Computing and Telecommunications DivisionCTIO Cerro Tololo Inter-american ObservatoryCTNE Compania Telefonica Nacional de EspanaCTS Compatible Timesharing SystemCTV Canadian TeleVision networkCU Close-UpCUA Common User AccessCV Curriculum VitaeCW Car WarsCW Chemical WarfareCW Child WelfareCW ChurchwardenCW Continuous WaveCWO Cash With Order

CWO Chief Warrant OfficerCWRU Case Western Reserve UniversityCXI Common X-windows InterfaceCY Calendar Year CYO Catholic Youth OrganizationCZ Canal Zone

D

D DepthD&D Dungeons & Dragons

D/A Digital to Analog converterD/F Direction FindingDA Days after AcceptanceDA Department of AgricultureDA Deposit AccountDA Directory Assistance

(/C = computerized, /M = Microfilm)DA District AttorneyDA Don't Answer DAC Digital to Analog ConverterDACCS Digital Access Cross Connect SystemDAD Draft ADdendumDAR Daughters of the American Revolution

DARPA Defense Advanced Research Projects AgencyDASD Direct Access Storage DeviceDAT Digital Audio TapeDATA Defense Air Transport AdministrationDAV Disabled American VeteransDB DataBaseDB DeciBelsDBF DBase FormatDBME DataBase Managment EnvironmentDBMS DataBase Management System

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(rdbms for Relational...)DBRAD Data Base Relational Application DirectoryDC Direct Current (dc, see also AC)DC District of ColumbiaDCA Defense Communications AgencyDCA Distributed Communication ArchitectureDCA Document Content ArchitectureDCC Descriptive Cataloging CommitteeDCCO Defense Commercial Communications OfficeDCE Data Communication EquipmentDCL Digital Command LanguageDCP Distributed Communications ProcessorDCTS Dimension Custom Telephone ServiceDD DaredevilsDD Data DictionaryDD Days after DateDD Demand DraftDD Dishonorable DischargeDD Disk DriveDD Doctor of Divinity

DDC Digital Data ConverterDDD Direct Distance Dial(ing)DDL Document Description LanguageDDN Defense Data NetworkDDP Distributed Data ProcessingDDS Doctor of Dental ScienceDDS Doctor of Dental SurgeryDE DelawareDEA Drug Enforcement AgencyDEAR Department of Energy Acquisition RegulationDEC Digital Equipment CorporationDES Data Encryption StandardDEW Distant Early Warning (as in DEW Line)

DF Damage FreeDF Direction FindingDFC Distinguished Flying CrossDFD Data Flow DiagramDFE Data Flow EditorDFM Distinguished Flying MedalDFS Depth-First SearchDFW Dallas-Ft.Worth (regional airport)DG Dei Gratia (by the grace of God)DG Director GeneralDGSC Defense General Supply CenterDHHS Department of Health and Human ServicesDHSS british Department of Health and Social Security

DIA Document Interchange ArchitectureDIAD (magnetic) Drum Information Assembler/DispatcherDIAL Direct Information Access LineDIAS Defense Automatic Integrated SystemDID Direct Inward DialingDIF Document Interchange FormatDIN Deutsches Institut fur NormungDIRE Dire Is Really EmacsDIS Draft International Standard (ISO)DISOSS DIStributed Office Support System

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DIY Do It Yourself DJ Disc JockeyDLA Defense Logistics AgencyDLL Dial Long Line equipmentDLO Dead Letter OfficeDM Dungeon Master DMA Direct Memory AccessDMD Doctor of Dental MedicineDME Distance Measuring EquipmentDMOS Diffusion Metal Oxide

Semiconductor (see MOS)DMV Department of Motor VehiclesDMZ DeMilitarized ZoneDNA DeoxyriboNucleic AcidDNA Digital Network ArchitectureDNHR Dynamic NonHierarchical RoutingDNIC Data Network Identification CodeDNL Director of Naval LaboratoriesDNR Dialed Number RecorderDOA Dead On Arrival

DOB Date Of BirthDOC Dynamic Overload ControlDOD Department Of DefenseDOE Department of EnergyDOMAIN Distributed Operating Multi Access

Interactive Network (Apollo)DOS Disk Operating SystemDOT Department Of TransportationDOT&E Director, Operational Test and EvaluationDP Data ProcessingDP Dial PulseDP Displaced Persons (expelled from native land)DP Display Postscript

DP Double PlayDP Draft ProposalDPA Delegation of Procurement AuthorityDPANS Draft Proposed American National StandardDPI Dots Per InchDPS Display PostScriptDQ Dairy QueenDQ Dragon QuestDQL Database Query LanguageDR Dead ReckoningDR Dining RoomDRAM Dynamic Random Access Memory

(as opposed to static RAM)

DRD Data Reading DeviceDRE Directional Reservation EquipmentDRG Democratic Republic of Germany (East Germany)DRI Digital Research, IncorporatedDS Double-SidedDSA Dial System AssistanceDSE Data Structure EditorDSEE Domain Software Engineering EnvironmentDSM Distinguished Service MedalDSO Distinguished Service Order

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DSP Decessit Sine Prole (died without issue)DSP Digital Signal ProcessingDSRI Digital Standard Relational InterfaceDSS Decision Support SystemDSS Direct Station SelectionDST Daylight Saving TimeDSTN Double SuperTwisted NematicDT Delirium TremensDTE Data Terminal EquipmentDTF Dial Tone First payphoneDTMF Dial Tone Multi FrequencyDTP DeskTop PublishingDTR Data Terminal ReadyDUI Driving Under the InfluenceDUT Device Under TestDV Deo Vo lente (God willing)DVD Digital Versatile Disc or Digital Video DiscDVM Digital Volt MeterDVM Doctor of Veterinary MedicineDWAPS Defense Warehousing Automated

Processing SystemDWI Driving While IntoxicatedDWIM Do What I MeanDX Distance (as in long distance

radio communication)DXT Data eXtractT facility

E

E EastE Espionage

E&EO Errors and Omissions ExceptedE-MAIL Electronic MAILEADASS Engineering and Administrative Data

AcquiSition SystemEAS Extended Area Service (or Engineering

Admin. System)EBCDIC Extended Binary Coded Decimal

Interchange CodeECAFE Economic Commission for Africa

and the Far EastECASS Electronically Controlled Automatic

Switching SystemECASS Export Control Automated Support System

ECC Error Correction CodeECCM Electronic Counter-CounterMeasuresECDO Electronic Community Dial OfficeECG ElectroCardioGramECL Emitter Coupled Logic (see also TTL)ECM Electronic Counter MeasureECM European Common MarketECO Electronic Central OfficeECO Engineering Change OrderECT ElectroConvulsive Therapy

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ED&D Expert Dungeons & DragonsEDGAR Electronic Data Gathering, Analysis,

and RetrievalEDI Electronic Data InterchangeEDIF Electronic Design Interchange FormatEDP Electronic Data ProcessingEDS Electronic Data SystemsEDT Eastern Daylight TimeEDTA Ethylene Diamine Tetraacetic AcidEDTCC Electronic Data Transmission

Communications CentralEE Electrical Engineer EE Electrical or Electronics EngineerEEC European Economic CommunityEEG ElectroEncephaloGramEEL Epsilon Extension LanguageEEPROM Electrically Erasable Programmable

Read Only MemoryEGA Enhanced Graphics AdapterEHF Extremely High Frequency (30-300GHz)

EINE EINE Is Not EmacsEISA Extended Industry-Standard ArchitectureEISS European Intelligence Support SystemEKG ElectroKardioGramm (see ECG)EL ElectroLuminescent (as in display)ELF Extremely Low FrequencyELO Electric Light OrchestraELP Emerson, Lake and Palmer (or Powell)EM Enlisted Man (see EW)EMA Electronic Mail AssociationEMACS Editor MACroSEMACS Eight Megabytes And Constantly SwappingEMF ElectroMotive Force

EMI ElectroMagnetic InterferenceEMP Electromagnetic PulseEMPRESS EnvironMental Pulse Radiation Environment

Simulator for ShipsEMR ElectroMagnetic ResponseEMS Electronic Message SystemEMS Extended Memory SpecificationEMT Emergency Medical TechnicianEMU ElectroMagnetic UnitENIAC Electronic Numerical Integrator

and CalculatorENS ENSignEO End Office

EO Erasable OpticalEOF End Of FileEOM End Of MonthEP Experience PointsEP Extended PlayEPA Environmental Protection AgencyEPOS Engineering and Project-management

Oriented Support systemEPRI Electric Power Research InstituteEPROM Erasable Programmable Read Only Memory

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EPS Encapsulated PostScriptEPT Empire of the Petal ThroneEQ Educational Quotient (see IQ)ER Emergency RoomERA Earned Run AverageERA Entity-Relationship-AttributeERA Equal Rights AmendmentERD Entity-Relation DiagramERE Entity Relationship EditorES Expert SystemESA European Space AgencyESAC Electronic Systems Assistance CenterESDI Enhanced Standard Device InterfaceESE East South EastESM Electronic Support MeasuresESO European Southern ObservatoryESP Extra Sensory PerceptionESPS Entropic Signal Processing SystemESS Electronic Switching SystemESSEX Experimental Solid State EXchange

EST Eastern Standard TimeET Eastern TimeET ExtraTerrestrialETA Estimated Time of ArrivalETC Et cetera, and so on...ETD Estimated Time of DepartureETFD Electronic Toll Fraud DeviceETH Eidgnoessiche Techniche HochschuleETS Electronic Translator SystemETV Education TeleVisionEUUG European Unix User GroupEVA ExtraVehicular ActivityEVX Electronic Voice eXchange

EW Electronic WarfareEW Enlisted Woman (see EM)EWOS European Workshop for Open Systems

F

FA Football Association (British soccer--a wordderived from Association)

FAA Federal Aviation AgencyFACD Foreign Area Customer DialingFAO Food and Agriculture Organization

of The United States

FAR Federal Acquisition RegulationsFAS Foreign Agricultural ServiceFAS Free Alongside ShipFASST Flexible Architecture Standard

System TechnologyFAT Foreign Area TranslationFAX FAcsimileFB Freight BillFBI Federal Bureau of InvestigationFCC Federal Communication Commission

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FCC Federal Computer ConferenceFDA Food and Drug AdministrationFDDI Fiber Distributed Data InterfaceFDHD Floppy Drive High DensityFDIC Federal Deposit Insurance CorporationFDM Frequency Division MultiplexingFDR Franklin Delano RooseveltFEA Finite Element AnalysisFEDSIM FEDeral Systems Integration and

Management centerFEMA Federal Emergency Management AgencyFEPC Fair Employment Practices CommissionFERS Federal Employees Retirement SystemFET Federal Excise TaxFET Field Effect TransistorFFA Future Farmers of AmericaFFT Fast Fourier TransformFHA Federal Home AdministrationFHA Future Homemakers of AmericaFIB Focused Ion Beam

FICA Federal Insurance Contributions ActFIDO Fog Investigation Dispersal OperationFIFO First In First Out (as in registers

and buffers)FILO First In Last Out (see also FIFO)FIMS Forms Interface Management SystemFINE FINE Is Not EmacsFIO Frequency In and OutFIPS Federal Information Processing StandardFIR Finite Impulse ResponseFIRMR Federal Information Resource

Management RegulationFIT Federal Information Technologies, inc.

FL FloridaFLACC Full Level Algol Checkout CompilerFLOPS FLoating-point OPerations per SecondFLRA Federal Labor Relations AuthorityFM Frequency ModulationFMB Federal Maritime BoardFMCS Federal Mediation and Conciliation ServiceFMS Financial Management Service (Treasury Dept)FMS Forms Management SystemFO Foreign OfficeFO Forward Observer FOAC Federal Office Automation CenterFOB Free On Board

FOC Free Of ChargeFOIA Freedom Of Information ActFOIMS Field Office Information Management SystemFOOBAR See FUBARFOR Free On RailFORCS Faa's Operational Reporting

Communication SystemFORD Fix Or Repair DailyFORD Found On Road DeadFORTRAN FORmula TRANslator

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FOSE Federal Office Systems ExpositionFOT Free On TruckFOV Field Of ViewFPA Floating Point AcceleratorFPC Fish Protein ConcentrateFPE Floating Point EngineFPHA Federal Public Housing AuthorityFPLA Field Programmable Logic Array (see PLA)FPM Feet Per MinuteFPO Field Post OfficeFPO Fleet Post OfficeFPS Feet Per SecondFRACTAL FRACTional dimensionALFRED Fred Resembles Emacs DeliberatelyFRG Federal Republic of Germany (West Germany)FROG Free Rocket Over GroundFRPG Fantasy Role Playing GameFRS Federal Reserve SystemFSF Free Software FoundationFSK Frequency Shift Keying

FSLIC Federal Savings and LoanInsurance Corporation

FSS Federal Supply ServiceFSW Forward Swept WingsFT FootFTAM File Transfer And ManagementFTC Federal Trade CommissionFTL Faster Than LightFTP File Transfer ProtocolFTS Federal Telephone SystemFUBAR F***ed Up Beyond All RecognitionFW FringeworthyFWD Front Wheel Drive

FWHM Full Width at Half MaximumFX Foreign eXchangeFY Fiscal Year FYI For Your Information

G

GA Gamblers AnonymousGA General AssemblyGA General AverageGA General of the Army

GA GeorgiaGAAP Generally Accepted Accounting PrinciplesGAN Global Area NetworkGAR Grand Army of the RepublicGATT General Agreement on Tariffs and TradeGAW Guaranteed Annual WageGB GangbustersGB GigaByteGB Great BritainGBIP General Purpose Interface Bus

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GC Garbage Collection (LISP)GC Gas Chromatograph (or Chromatography)GCA Ground Controlled ApproachGCC Gnu C CompilerGCD Ground Controlled DescentGCL Graphics Command LanguageGCM General Court MartialGCR Group-Coded Recording (magnetic tape, 6250 bpi)GCT Greenwich Civil TimeGDB Gnu DeBugger GE General ElectricGEM Graphics Environment ManagerGHQ General HeadQuartersGHz Giga HertZ (unit of frequency, 1,000,000,000

cycles per second)GI Galvanized IronGI Gastro Intestinal (as in upper GI)GI General IssueGI Government IssueGIF Graphics Interchange Format

GIGO Garbage In Garbage OutGIN Graphics INputGISS Goddard Institute for Space StudiesGKS Graphical Kernel StandardGM Game Master GM General Manager GM General MotorsGM Guided MissileGMBH Gesellschaft Mit Beschraenkter HaftungGMT Greenwich Mean TimeGNP Gross National ProductGNU GNU's Not UnixGOES Geostationary Orbiting Environmental Satellites

GOSIP Government OSI ProfileGP General Practitioner GPI Graphics Programming InterfaceGPIB General-Purpose Interface BusGPO General Post OfficeGPO Government Printing OfficeGPS Global Positioning SystemGQ General QuartersGRB Gamma Ray Burst(er)GREP Global Regular Expression Print, g/re/p,

(UNIX command)GRO Gamma Ray ObservatoryGS General Schedule

GS Glide SlopeGSA General Services AdministrationGSA Girl Scouts of AmericaGSBCA General Services administration

Board of Contract AppealsGSFC Goddard Space Flight CenterGSTS Ground-based Surveillance and Tracking SystemGT Gross TonGTE General Telephone and ElectricGTSI Government Technology Services, inc.

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GUI Graphical User InterfaceGW Gamma WorldGWEN Ground Wave Emergency Network

H

H HarnH HeightHACD Home Area Customer DialingHAL Heuristically programmed ALgorithmic

computer (2001)HAM Hold And ModifyHBM Her British Majesty, His British MajestyHBO Home Box OfficeHC Holy CommunionHC House of CommonsHCFA Health Care Financing AdministrationHCL High Cost of Living

HD Hard DiskHD Heavy DutyHDA Head Disk Assembly (in winchester disk drives)HDBV Host Data Base ViewHDL High Density LipoproteinHDLC High-level Data Link Control (IBM network stuff)HDTV High Definition TelevisionHE His Eminence, His ExcellencyHEAO High Energy Astronomical ObservatoryHEMP Help End Marijuana ProhibitionHERO Hazards of Electromagnetic Radiation to OrdnanceHF High FantasyHF High Frequency (3-30MHz)

HFE Human Factors EngineeringHFS Hierarchical File SystemHI HawaiiHIIPS Hud Integrated Information Processing ServicesHLL High-Level LanguageHMOS High performance Metal Oxide

Semiconductor (see MOS)HMS His/Her Majesty's ShipHMT His/Her Majesty's TransportHNPA Home Numbering Plan AreaHOBIS HOtel Billing Information SystemHOL High-Order SystemHP Hewlett Packard, inc.

HP High PressureHP Higher Power (sort of an AA "in"term, usually God)

HP Hit PointsHP HorsePower HPGe High Purity GermaniumHPL/T High-Productivity Languages/ToolsHQ HeadQuartersHR House of RepresentativesHRH Her Royal Highness

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HRH His Royal HighnessHS High SchoolHSB Hue, Saturation, BrightnessHST Hawaiian Standard TimeHT High Tension (as in electric power transmission)HTK Hits To KillHUAC House Unamerican Activities CommitteeHUD Heads Up DisplayHUD Housing and Urban DevelopmentHVAC Heating, Ventilation, and Air ConditioningHW2000 Highway 2000HWM High-Water MarkHb HemogloBinHz HertZ (unit of frequency, cycles per second)

I

I/O Input/Output

IAEA International Atomic Energy AgencyIATA International Air Transport AssociationIBM International Business Machines, inc.IC Integrated CircuitICB Interstate Computer BankICBM InterContinental Ballistic MissileICE In-Circuit EmulatorICI Imperial Chemical IndustriesICJ International Court of JusticeICL International Computers Ltd.ICP Integrated Channel ProcessorICP Inventory Control PointsICRC International Cosmic Ray Conference

ID IDentificationID IdahoIDA Intercommunication Data AreasIDA International Development AssociationIDDD International Direct Distance DialingIDE Interactive Development Environments, incIDF Intermediate Distributing FrameIE Indo-EuropeanIEE Institute of Electrical Engineers (UK)IEEE Institute of Electrical and

Electronics EngineersIF Intermediate Frequency (as in IF stage)IFB Invitation For Bids

IFC International Finance CorporationIFC International Freighting CorporationIFF Identification, Friend or FoeIFF Interchange File FormatIFLA International Federation of

Library AssociationsIGES Initial Graphics Exchange StandardIGY International Geophysical YearIHP Indicated HorsePowerIHS Integrated Hospital Support

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IIA Information Industry AssociationIIE Institute of Industrial EngineersIIHF International Ice Hockey FederationIIL Integrated Injection LogicILO International Labor OrganizationILS Instrument Landing SystemIMF International Monetary FundIMHO In My Humble OpinionIMP Interface Message Processor (ARPAnet)IMSL International Mathematical Subroutine LibraryIN IndianaINADS INitialization and ADministration SystemINRA Iesus Nazerenus Rex Iudaeorum

(Jesus of Nazareth, King of the Jews)INRIA Institut National de Recherche en

Informatique et AutomatiqueINS Immigration and Naturalization ServiceINSTITUTE INSTITUTE's Name Shows That It's

Totally Unrelated To EMACSINTAP INteroperability Technology Association for

information ProcessingINWATS INward Wide Area Telephone ServiceIO Input/Output (sometimes I/O)IOD Identified Outward DialingIOOF International Order of Odd FellowsIOU I Owe you (U)IP Innings PitchedIP Intermediate PointIPC Inter-Process CommunicationIPE Integrated Programming EnvironmentIPMS InterPersonal Message ServicesIPS Information Processing StandardsIPSE Integrated Project-Support Environment

IQ Intelligence Quotient (see EQ)IR Index Register IRA Individual Retirement AccountIRA Irish Republican ArmyIRAS Infrared Astronomical SatelliteIRBM Intermediate Range Ballistic MissileIRDS Information Resource Dictionary StandardIRDS InfraRed Detection SetIRE Institute of Radio Engineers

(old name for the now IEEE, which see)IRM Information Resources ManagementIRMS Information Resources Management ServiceIRS Internal Revenue Service

IS Information SystemsIS International StandardISA Industry-Standard ArchitectureISAM Indexed Sequential Access MethodISBD International Bibliographic DescriptionISC Information Services CenterISC International Switching CenterISCH Interstitial-Cell-Stimulating

Hormone (same as LH)ISDN Integrated Services Digital Network

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ISDT Integrated Systems Development ToolISEE International Sun Earth

Explorer (usually ISEE-3)ISF Information Systems FactoryISFUG Integrated Software Federal User GroupISO International Standards OrganizationISOO Information Security Oversight OfficeISPM International Solar Polar MissionISR Institute of Snow ResearchISRG Independent Space Research GroupISV Independent Software VendorIT Industrial TechnologyIT Information TechnologyITC Inter-Task CommunicationITS Incompatible Timesharing SystemITT International Telephone and TelegraphITU International Telecommunications UnionITUSA IT Users Standards AssociationIUS Inertial Upper Stage

J

JACM Journal of the Association forComputing Machinery

JBS John Birch SocietyJC Jesus ChristJC Joint Compound (plumbing)JC Julius Caesar JC Junior CollegeJCA Jewelry Crafts AssociationJCAC Joint Civil Affairs Committee

JCAE Joint Committee on Atomic EnergyJCEE Joint Council on Economic EducationJCET Joint Council on Educational TelevisionJCS Joint Chiefs of StaffJD Justice DepartmentJDS John Dewey SocietyJES John Ericsson SocietyJFK John F. Kennedy (international airport)JFMIP Joint Financial Management

Improvement ProgramJGR Journal of Geophysical ResearchJI Justice, Inc.JIC Joint Intelligence Center

JIC Just in CaseJIM Job Information MemorandumJINTACCS Joint INteroperability of TActical

Command and Control SystemsJIS Japan Industrial StandardsJISC Japanese Industrial Standards CommitteeJIT Just In TimeJMS John Milton SocietyJO Job Order JO Junior Officer

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JOVE Jonathan's Own Version of EmacsJOVIAL Jules Own Version of the International

Algorithmic LanguageJPL Jet Propulsion LaboratoryJRC Junior Red CrossJSC Johnson Space CenterJSD Jackson System DevelopmentJSRC Joint Services Review CommitteeJTIDS Joint Tactical Information

Distribution SystemsJV Junior Varsity

K

K&R Kernighan and Ritchie, the c programminglanguage

K9 canine (K9 corps, army dogs)KB KiloByte

KC King's Counsel (QC when queen reigning)KC Knights of ColumbusKD Kiln DriedKD Knocked DownKDCI Key Display Call IndicatorKERMIT Kl-10 Error-free Reciprocal Micro

Interconnect over Tty linesKHz Kilo HertZ

(unit of frequency, 1000 cycles per second)KI Kiwanis InternationalKIA Killed In ActionKIAS Knot Indicated Air SpeedKO Knock Out

KP Key PulseKP Kitchen PoliceKPNO Kitt Peak National ObservatoryKPO KeyPunch OperatorKQC King's College LondonKS King's Scholar KSC Kennedy Space CenterKSU Key Service UnitKTS Key Telephone SystemKTU Key Telephone UnitKWIC Key Word In ContextKY Kentucky

L

LA Los AngelesLA LouisianaLA Low AltitudeLADAR LAser Detection And RangingLAM Master of Liberal ArtsLAMA Local Automatic Message AccountingLAN Local Apparent Noon

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LAN Local Area NetworkLAR Local Acquisition RadarLASER Light Amplification by Stimulated

Emission of RadiationLAT Local Apparent TimeLATA Local Access Transport AreaLAX Los Angeles International AirportLB Light Bomber LB pound (LiBra)LBHS Long Beach High SchoolLBL Lawrence Berkeley LabsLC inductor-Capacitor circuit (as in filters,

L is symbol inductance)LCD Liquid Crystal DisplayLCD Lowest Common DenominatorLCDR Lieutenant CommanderLCM Life Cycle ManagementLCT Landing Craft TanksLDEF Long Duration Exposure FacilityLDL Low Density Lipoprotein

LDX Long Distance eXtenderLEAP Low-power Enhanced At PortableLED Light Emitting DiodeLEM Lunar Excursion ModuleLF Low Frequency (30-300KHz)LH Left HandLH Lower Half LH Luteinizing Hormone (same as ISCH)LHD Litterarum Humaniorum Doctor

(doctor of human letters)LHS Left Hand SideLI Long IslandLIFIA Laboratoire d'Informatique Fondamentale

et d'Intelligence ArtificielleLIFO Last In First Out (see FIFO)LINC Laboratory INstrument ComputerLISP LISt Processing LanguageLIU Line Interface UnitLL Late LatinLL Long LinesLLAMA Logic Lacking A Meaningful AcronymLLB Legum Baccalaureus (bachelor of laws)LLD Legum doctor (doctor of laws)LLN Line Link NetworkLLNL Lawrence Livermore National LaboratoriesLLP Line Link Pulsing

LM Life Master (Contract Bridge ranking)LM Lunar ModuleLMC Large Magellanic Cloud (see SMC)LMOS Line Maintenance Operations SystemLNG Liquified Natural GasLOA Lands of AdventureLOOPS Lisp Object Oriented Programming SystemLOP Lines Of PositionLOTS Low Overhead Timesharing SystemLP Long Playing record

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LP Low PressureLPC Linear Predictive Coding (speech processing)LPDA Link Problem Determination AidLPF League for Programming FreedomLPG Liquified Petroleum GasLPG Low Pressure GasLPN Licensed Practical NurseLPP Licensed Program ProductsLPR Line PrinteRLRBM Long Range Ballistic MissileLRC Longitudinal Redundancy CharacterLRU Line Replaceable UnitLS Left SideLS Letter SignedLS Locus Sigilli (place of seal)LSB Least Significant Bit, Least Significant ByteLSC LightSpeed CLSD Least Significant DigitLSD LySergic acid DiethylamideLSD pounds (Libra), shillings (Sestertii),

and (old) pence (Denarii)LSI Large Scale IntegrationLSP LightSpeed PascalLSS Life Support SystemLSS Loop Switching SystemLSSD Level-Sensitive Scan DetectionLT Long TonLT Low TensionLTC Lieutenant ColonelLTJG Lieutenant Junior GradeLTL Less than Truckload LotLUG Local Users GroupLUT Look-Up Table

LWM Low-Water MarkLZ Landing Zone

M

M MiniaturesMA MassachusettsMAAP Maintenance And Administration PanelMAC Military Air CommandMACSYMA project MAC's SYmbolic MAnipulation SystemMAD Mutual Assured Destruction

MADD Mothers Against Drunk DrivingMAG MagazineMAN Metropolitan Area NetworkMAP Manufacturing Automation ProtocolMARBI MAchine Readable form of

Bibliographic InformationMARC MAchine Readable card CatalogMARS Multiuser Archival and Retrieval SystemMASC Multiple Award Schedule ContractMASER Microwave Amplification by Stimulated

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Emission of RadiationMASH Mobile Army Surgical HospitalMAST Multi-Application SOnar TrainerMAT-CALS Marine Air Traffic-Control

And Landing SystemMAU Math Acceleration UnitMB MegaByteMBA Master Business AdministrationMC Master of CeremoniesMCA Micro Channel ArchitectureMCAE Mechanical Computer Aided EngineeringMCC Master Control ConsoleMCC Microelectronics and Computer

technology CorporationMCP Master Control ProgramMCP/AS Master Control Program/Advanced SystemMCPO Master Chief Petty OfficerMD MarylandMD Medical Doctor MD Months after Date

MDAS Magnetic Drum Auxiliary SenderMDE Modular Design EnvironmentMDF Main Distribution FrameMDT Mean Down TimeME MaineME Mechanical Engineer MERP Middle-Earth Role PlayingMEd Master of EDucationMF Medium Frequency (300-3000KHz)MF Middle FrenchMF Multi-FrequencyMFA Master Fine ArtsMFLOPS Million FLoating-point OPerations

per SecondMFM Modified Frequency ModulationMFS Macintosh File SystemMG Machine GunMG Major GeneralMG Military GovernmentMGH Massachusetts General HospitalMGM Metro-Goldwyn MayerMHD MagnetoHydroDynamicsMHz Mega HertZ (unit of frequency,

1,000,000 cycles per second)MI MichiganMI Military Intelligence

MIA Missing In ActionMIDI Musical Instrument Digital InterfaceMIFASS Marine Integrated Fire And Support SystemMILNET MILitary NETworkMIM Morality In MediaMIMD Multiple Instruction, Multiple DataMINCE MINCE Is Not Complete EmacsMIPS Million Instructions Per SecondMIRV Multiple Independently-Targetable

Reentry Vehicle

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MIS Management Information SystemsMIT Massachusetts Institute of TechnologyML Middle LatinMLA Member of Legislative Assembly (see MPP)MLD Minimum Lethal DoseMLS Microwave Landing SystemMLS Multi-Level SecurityMM Maryknoll MissionersMMES Martin Marietta Energy SystemsMMFS Manufacturing Message Format StandardMMM see 3MMMU Memory Management UnitMN MinnesotaMNA Member of National Assembly (Quebec)MNP Microcom Networking ProtocolMO Mail Order MO Medical Officer MO MissouriMO Modus OperandiMO Money Order

MOR Middle-Of-the-RoadMOS Metal Oxide SemiconductorMOSFET Metal Oxide Semiconductor Field

Effect TransistorMOTIS Message-Oriented Text Interchange SystemMOU Memorandum Of UnderstandingMOUSE Minimum Orbital Unmanned Satellite of EarthMP Melting PointMP Member of ParliamentMP Metropolitan PoliceMP Military Police(man)MPG Miles Per GallonMPH Miles Per Hour

MPP Member of ProvincialParliament (Canada, also MLA)

MPW Macintosh Programmer's WorkshopMR Miniatures RulesMRP Manufacturing Requirements PlanningMS ManuScriptMS Master of ScienceMS Military ScienceMS Motor ShipMS Multiple SclerosisMS-DOS MicroSoft DOSMSB Most Significant Bit or Most

Significant Byte

MSC MicroSoft CMSCP Mass Storage Control ProtocolMSD Most Significant DigitMSE Mobile Subscriber EquipmentMSG MonoSodium GlutamateMSH Marvel Super HeroesMSL Mean Sea LevelMSPE Mercenaries, Spies & Private EyesMSS Management Support SystemMSS ManuScriptS

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MSS Mass Storage SystemMST Mountain Standard TimeMT Metric TonMT Mountain TimeMTA Message Transfer AgentMTA Metropolitan Transportation AuthorityMTBF Mean Time Between FailuresMTR Magnetic Tape RecordingMTSO Mobile Telephone Switching OfficeMTTF Mean Time To FailureMTV Music TeleVisionMUF Maximum Usable Frequency

(max freq during sunspot activity)MULTICS MULTiplex Information Computer ServicesMUMPS Mgh Utility MultiProgram SystemMUNG Mung Until No Good (see the

hacker's dictionary)MUX MUltipleXorMVA MegaVolt AmpereMX Missile eXperimental

MeV Million Electron Volts

N

N NorthN NoticeNA Narcotics AnonymousNA North AmericaNA Not ApplicableNAACP National Association for the Advancement

of Colored PeopleNAAS North American Automated Systems co.

NAB National Association of BroadcastersNABISCO NAtional BIScuit COmpanyNACS National Advisory Committee

on SemiconductorsNAD Network Access DeviceNADGE NATO Air Defense Ground EnvironmentNAG Numerical Algorithms GroupNAGE National Association of

Government EmployeesNAK Negative AcKnowledgeNAPAP National Acid Precipitation

Assessment ProgramNAR Nuclear Acoustic Resonance

NARDAC NAvy Regional Data Automation CenterNAS National Academy of SciencesNAS National Advanced SystemsNASA National Aeronautics and Space AdministrationNASA/GSFC NASA Goddard Space Flight CenterNATO North Atlantic Treaty OrganizationNAVDAC NAVal Data Automation CommandNAVSWC NAV Surface Weapons CenterNB New BrunswickNB Nota Bene

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NBA National Basketball AssociationNBC National Broadcasting CompanyNBFM NarrowBand Frequency ModulationNBO Network Build OutNBS National Bureau of StandardsNBVM Narrow Band Voice ModulationNC No ChargeNC North CarolinaNCA Network Control AnalysisNCC National Computer ConferenceNCDC National Climatic Data CenterNCE New Catholic EditionNCGA National Computer Graphics AssociationNCIC National Cartographic Information CenterNCO Non-Commissioned OfficerNCP Network Control ProgramNCR National Cash RegisterNCS Network Computing SystemNCSA National Center for Supercomputing ApplicationsNCSC National Computer Security Center

NCTL National Computer andTelecommunications Laboratory

NCV No Commercial ValueND No DateND North DakotaNDA Non-Disclosure AgreementNDDL Neutral Data Definition LanguageNDE News Development EnvironmentNDEA National Defense Education ActNDL Network Database LanguageNDP New Democratic Party (Canada)NDSL National Direct Student LoanNDT Newfoundland Daylight Time

NE New EnglandNE North EastNEAR National Electronic Accounting and

Reporting systemNEB New English BibleNEC Nippon Electric CompanyNEI Not Elsewhere IncludedNES National Energy StrategyNES Not Elsewhere SpecifiedNESC National Energy Software CenterNET NETworkNET National Educational TelevisionNEWS Network extensible Window System

NEXRAD NEXt generation weather RADarNF No FundsNFC National Football ConferenceNFFE National Federation of Federal EmployeesNFL National Football LeagueNFS Network File SystemNG National GuardNG No GoodNH New HampshireNHI National Health Insurance

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NHL National Hockey League (the "nation" isCanada, BTW)

NIC Network Information Center (ARPAnet)NIH National Institutes of HealthNIH Not Invented HereNIM Nuclear Instrumentation Module

(an electronic instr. standard)NIMH National Institute of Mental HealthNIS Network Information System (formerly yp)NISO National Information Standards OrganizationNIST National Institute of Standards and Technology

(formerly NBS)NJ New JerseyNL National League (baseball)NLM National Library of MedicineNLP Natural Language ProcessingNLRB National Labor Relations BoardNLS Network License ServerNM Nautical MileNM New Mexico

NM Night MessageNM No Mark, Not MarkedNMOS N channel Metal Oxide

Semiconductor (N-MOS)(see MOS)NMR Nuclear Magnetic ResonanceNNE North North EastNNTP Net News Transfer ProtocolNNW North North WestNOA NSWC Office AutomationNOAA National Oceanic and Atmospheric AdministrationNORAD NORth American Defense CommandNORML National Organization

for the Reform of Marijuana Laws

NOS Not Otherwise SpecifiedNOSC Naval Ocean Systems CenterNOTIS Network Operator Trouble Information SystemNP No ProtestNP Nondeterministic-PolynomialNP Notary PublicNP Noun PhraseNPA Number Plan AreaNPC Non-Player Character (see PC)NPL Non-Procedural LanguageNPN Negative-Positive-Negative (transistor)NPN NonProtein NitrogenNPR National Public Radio

NQS Network Queuing SystemNRA National Rifle AssociationNRC National Research CouncilNRC Nuclear Regulatory CommissionNRE Non-Recurring Engineering (as in NRE costs)NRL Naval Research LabsNRO National Reconnaissance OfficeNRZ Non-Return to ZeroNRZI Non-Return to Zero IndicatesNRZI Non-Return to Zero Inverted (magnetic tape,

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800 bpi)NS Not SpecifiedNS Nova ScotiaNS Nuclear ShipNSA National Security AgencyNSC National Security CouncilNSE Network Software EnvironmentNSF National Science FoundationNST Newfoundland Standard TimeNSW New South WalesNSWC Naval Surface Warfare CenterNSWC Naval Surface Weapons CenterNT New TestamentNT Newfoundland TimeNT Northern TerritoryNTEU National Treasury Employees UnionNTIS National Technical Information ServiceNTN Neutralized Twisted NematicNTP Normal Temperature and Pressure (see STP)NTSB National Transportation Safety Board

NTSC National Television Standards CommitteeNTSC Never The Same ColorNTT Nippon Telephone & TelegraphNU Name UnknownNURBS NonUniform Rational B-SplineNUSC Naval Underwater Systems CommandNV NevadaNW North WestNWS National Weather ServiceNWT North West TerritoriesNY New YorkNYC New York CityNYSE New York Stock Exchange

NZ New ZealandNZUSUGI New Zealand Unix System User Group, Inc.

O

OA Office AutomationOA Overeaters AnonymousOAS Organization of American StatesOATS Office Automation Technology and ServicesOBE Order of the British EmpireOBS Omni Bearing Selector

OC Order of CanadaOCDM Office of Civil Defense and MobilizationOCI Out of City IndicatorOCLC Online Computer Library Center

(Ohio College Library Catalog)OCO Object Code OnlyOCR Optical Character RecognitionOCS Officer Candidate SchoolOD Doctor of OptometryOD Oculus Dexter (right eye)

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OD Officer of the DayOD OverDoseODI Optical Digital ImageODISS Optical Digital Image Storage SystemOE Old EnglishOED Oxford English DictionaryOEM Original Equipment ManufacturerOEO Office of Economic OpportunityOES Order of the Eastern StarOF Old FrenchOFM Order of Friars MinorOFS Order of Free StateOG Original GumOH OhioOIRA Office of Information and Regulatory AffairsOIU Office Interface UnitOJT On the Job TrainingOLTP On-Line Transaction ProcessingOMB Office of Management and BudgetOMD Orchestral Manouevers in the Dark

OMV Orbital Maneuvering VehicleON Old NorseONC Open Network ComputingONI Office of Naval IntelligenceONI Operator Number IdentificationONR Office of Naval ResearchOOP Object Oriented ProgrammingOOPART Out Of Place ARTifactOOPS Object-Oriented Programming SystemOP OFFICEPOWER office automation system,

trademark of CCIOP Observation PostOP Order of Preachers

OP Out of PrintOPEC Organization of Petroleum Exporting CountriesOPM Office of Personnel ManagementOR Operating RoomOR OregonOR Owner's Risk, Own RiskORNL Oak Ridge National LaboratoryOROM Optical Read Only MemoryOS Oculus Sinister (left eye)OS Operating SystemOS Ordinary SeamanOS Out of StockOSB Order of St. Benedict

OSCAR Orbiting Satellite Carry Amateur Radio(1st launched 12 Dec 1961)OSCRL Operating System Command Response LanguageOSD Office of the Secretary of DefenseOSDIT Office of Software Development and

Information TechnologyOSF Open Software FoundationOSF Order of St. FrancisOSI Open Systems InterconnectionOSI/RM Open Systems Interconnection/Reference Model

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OSME Open Systems Message ExchangeOSP Optical Storage ProcessorOSS Office Support SystemOSS Office of Strategic Services (later CIA)OSS Operation Support SystemOSTP Office of Science and Technology PolicyOT Old TestamentOT OverTimeOT&LF Open Taxi & Limousine FoundationOTA Office of Technical AssistanceOTA Office of Technology AssessmentOTB Off-Track BettingOTC Over The Counter (stocks)OTF Open Token FoundationOTH-B Over The Horizon, Backscatter (as in radar)OTR On The RagOTS Officers' Training SchoolOUTWATS OUTward Wide Area Telephone Service

P Q

PA PennsylvaniaPA Per AnnumPA Play AidPA Power of AttorneyPA Press AgentPA Private AccountPA Public AddressPA Purchasing AgentPABX Private Automatic Branch eXchangePAD Packet Assembler-Disassembler (for networking)

PAL Phase Alternation Line-ratePAL Programmable Array LogicPAM Pulse Amplification ModulationPARC Palo Alto Research Center, xeroxPATROL Program for Administrative Traffic

Reports On LinePBM Play By Mail gamePBS Public Broadcasting SystemPBX Private Branch eXchange (mini-telephone

network system)PC Peace CorpsPC PerCent, PerCentagePC Personal Computer

PC Player Character (see NPC)PC Post CardPC Post Cibum (after meals)PC Privileged Character PC Privy CouncilPC Program Counter PC Progressive Conservative party (Canada)PC-DOS Personal Computer DOSPC/AT Personal Computer/Advanced TechnologyPCB PolyChlorinated Biphenyls

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PCB Printed Circuit BoardPCI Panel Call IndicatorPCIE President's Council on Integrity and EfficiencyPCL Printer Command LanguagePCM Plug-Compatible MainframePCM Pulse Code ModulationPCPC Personal Computers Peripheral CorporationPCS Permanent Change of StationPCTE Portable Common Tools EnvironmentPCTS Posix Conformance Test SuitePD Per DiemPD Police DepartmentPD Potential DifferencePD Public DomainPDAD Proposed Draft ADdendumPDE Partial Differential EquationPDES Product Data Exchange SpecificationsPDF Program Development FacilityPDL Page Description LanguagePDL Program Design Language

PDP Plasma Display PanelPDP Programmed Data ProcessorPDQ Pretty Damned QuickPDT Pacific Daylight TimePE Phase EncodedPE Physical EducationPE Prince Edward islandPE Printer's Error PE Professional Engineer PE Protestant EpiscopalPEI Prince Edward IslandPEP Productivity Enhancement ProjectPEPE Pepe Est Presque Emacs

PERL Pathologically Eclectic Rubbish ListerPERL Practical Extraction and Report LanguagePEX Phigs/phigs+ Extension to XPGA Professional Graphics AdapterPGA Pure Grain AlcoholPHA Pulse Height Analyzer (or Analysis)PHIGS Programmers Hierarchical Interactive

Graphics SystemPHS Public Health ServicePIF Paid In FullPIT Principal, Interest, and TaxesPIXEL PIcture ELementPLA Programmable Logic Array

PLC Programmable Logic ControllerPLCC Plastic Leaded Chip CarrierPLL Phase-Locked LoopPLM Programming Language for MicrocomputersPLO Please Leave OnPM PayMaster PM Police MagistratePM Post MeridiemPM PostMaster PM PostMortem

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PM Preventive MaintenancePM Prime Minister PM Provost MarshalPM/X Presentation Manager for X windowsPMO Prime Minister's OfficePMOS P channel Metal Oxide

Semiconductor (P-MOS) (see MOS)PMT PhotoMultiplier TubePN Promissory NotePNP Positive-Negative-Positive (transistor)PO PettyOfficer PO Post OfficePO Postal Order PO Purchase Order POC Port Of CallPOD Pay On DeliveryPOE Port Of EmbarkationPOE Port Of EntryPOGO Polar Orbiting Geophysical ObservatoryPOM Phase Of Moon

POPS Paperless Order Processing SystemPOR Price On RequestPOS Point Of SalePOSI Promoting conference for OSIPOSIX Portable Operating System for unIXPOV Point Of ViewPOW Prisoner Of WarPP Parcel PostPP Past ParticiplePP Primary Point (or dial Post Pay payphone)PPB Parts Per BillionPPC Pour Prendre Conge' (to take leave)PPCS Person to Person, Collect, Special

PPM Parts Per MillionPPN Parameterized Post-Newtonian formalism

for general relativityPPN Project Programmer NumberPPS PostPostScriptumPPT Pulse Pair TimingPQ Province of QuebecPR PayRollPR Public RelationsPR Puerto RicoPRC Planning Research CorporationPROFS PRofessional OFfice SystemPROM Programmable Read Only Memory

PS PicoSecondPS PostScriptPS PostScriptumPS Power SteeringPS Power SupplyPS Public SchoolPSA Problem Statement AnalyzerPSC Polar Stratospheric CloudsPSDS Public Switched Digital ServicePSE Programming Support Environment

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PSG Platoon SerGeantPSK Phase Shift KeyingPSL Problem Statement LanguagePSR "Product Specific RealizationsPST Pacific Standard TimePSTN Public Switched Telephone NetworkPhysRev Physical Review Journal (Phys Rev)PT Pacific TimePT Patrol Torpedo (as in PT boat)PT Physical TherapyPT Physical TrainingPTA Parent-Teacher AssociationPTD Parallel Transfer DiskPTO Patent and Trademark OfficePTO Please Turn OverPTO Power Take-Off PVO Pioneer Venus OrbiterPW Prisoner of War (usually POW)PWG Permanent Working GroupPX Post eXchange (see BX)

QAM Quadrature Amplitude ModulationQC Quality ControlQC Queen's CounselQD Quaque Die (daily)QDA Quantity Discount AgreementQED Quod Erat Demonstrandum (which was

to be demonstrated)QEF Quod Erat Faciendum (which was to be done)QEI Quod Erat Inveniendum (which was

to be found out)QET Quantum Effect TransistorQIC Quarter-Inch Cartridge

QID Quater In Die (four times a day)QLI Query Language InterpreterQM QuarterMaster QMC QuarterMaster CorpsQMF Query Management FacilityQMG QuarterMaster GeneralQMS Quality Micro SystemsQNS Quantity Not SufficientQWERTY first six keys from left on top alphabetic

row of standard keyboard

R

R Rolemaster R&B Rhythm and Blues (commonly R and B)R&D Research and Development (commonly R and D)RA Regular ArmyRA Research AssistantRA Royal AcademyRAAF Royal Australian Air ForceRACE Random Access Card Equipment

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RACEP Random Access and Correlation forExtended Performance

RAD Radiation Absorbed DoseRAD Rapid Access DiskRADAR RAdio Detection And RangingRADM Rear ADMiralRAF Royal Air ForceRAM Random Access MemoryRARDE Royal Armaments Research and

Development EstablishmentRAS Reliability, Availability, and ServiceabilityRASC Residence Account Service CenterRBC Red Blood CountRBI Runs Batted InRBOC Regional Bell Operating CompanyRC Red CrossRC Regional Center RC Resistor-Capacitor circuit (as in filters)RC Roman CatholicRCA Radio Corporation of America

RCAF Royal Canadian Air ForceRCAS Reserve Component Automation SystemRCC Radio Common CarrierRCMP Royal Canadian Mounted PoliceRD Rural DeliveryRDA Remote Data AccessRDBMS Relational DataBase Management SystemRDF Radio Direction FindingREA Rail Express AgencyREM Rapid Eye MovementREO R. E. OldsREO Removable, Erasable, OpticalREXX Restructured EXtended eXecutor

RF Radio FrequencyRFC Request For CommentsRFD Rural Free DeliveryRFI Radio Frequency InterferenceRFP Request For ProposalsRFS Remote File SystemRGB Red Green BlueRGP Raster Graphics ProcessorRH Right HandRHS Right Hand SideRI Rhode IslandRIACS Research Institute for Advanced

Computer Science (NASA)

RIAS Radio In the American Sector, berlinRIF Reading Is FundamentalRIF Reduction In ForceRILM Repertoire International de

Literature MusicaleRIP Rest In Peace (or Requiescat In Pace : latin)RISC Reduced Instruction Set ComputerRITA Recognition of Information Technology

Achievement awardRJE Remote Job Entry

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RLC Resistor Inductor CapacitorRLL Run Length LimitedRMATS Remote Maintenance Administration and

Traffic SystemRMS Root Mean SquareRMS Royal Mail ShipRN Registered NurseRN Royal NavyRNA RiboNucleic AcidRNZAF Royal New Zealand Air ForceROFF Run-OFFROG Receipt Of GoodsROM Range Of MotionROM Read Only MemoryROM Rupture Of Membrane (as in birth)ROTC Reserve Officers' Training CorpsROTS Rotary Out Trunks SelectorsROYGBIV Red, Orange, Yellow, Green, Blue,

Indigo, Violet (ROY G. BIV)RPC Remote Procedure Call

RPG RePort GeneratorRPG Role Playing GameRPM Revolutions Per MinuteRPN Reverse Polish NotationRPO Railway Post OfficeRPS Revolutions Per SecondRPV Remotely Piloted VehicleRQ RuneQuestRR RailRoadRR Route RelayRR Rural RouteRRO Rate and Route OperatorRS Recording Secretary

RS Revised StatusRS Right SideRS Royal SocietyRSFSR Russian Soviet Federated Socialist RepublicRSN Real Soon NowRSU Remote Switching UnitRSV Revised Standard EditionRSVP Repondez S'il Vous Plait (please reply)RSWC Right Side up With CareRT RadioTelephoneRT RealTimeRTA Remote Trunk ArrangementRTAC Regional Technical Assistance Center

RTF Rich Text FormatRTFM Read The F***ing ManualRTG Radioisotope Thermoelectric GeneratorRTR Reel-To-ReelRTTY Radio TeletypeRU Receive UnitRW Right WorshipfulRW Right Worthy

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S

S SouthS SupplementS&C Skull & CrossbonesSA Salvation ArmySA Seaman ApprenticeSA Service AssistantSA Sex AppealSA Sine Anno (without date)SA South AfricaSA South AmericaSA Subject to ApprovalSAA South Atlantic AnomalySAA Systems Application ArchitectureSAC Special Area CodeSAC Strategic Air Command (see TAC)SADD Students Against Drunk DrivingSAM Surface-to-Air Missile

SAMA Step-by-step Automatic Message AccountingSAMTO Space And Missile Test OrganizationSAP Second Audio ProgramSAR Synthetic Aperture RadarSARTS Switched Access Remote Test SystemSASE Self-Addressed Stamped EnvelopeSASI Shugart Associates Systems InterfaceSAW Surface Acoustic WaveSBA Small Business AdministrationSC Sectional Center SC South CarolinaSC SubCommitteeSCAD Subsonic Cruise Armed Decoy

SCADC Standard Central Air Data ComputerSCAME SCreen oriented Anti-Misery EditorSCAMP Single-Chip A-series Mainframe ProcessorSCAN Switched Circuit Automatic NetworkSCC Switching Control Center (or Specialized

Common Carriers)SCCS Source Code Control SystemSCE Signal Conversion EquipmentSCE Structure Chart EditorSCI SpaceCraft IncorporatedSCIFI SCIence FIction (often used pejoratively

of what really isn't)SCO Santa Cruz Operation

SCOOPS SCheme Object Oriented Programming SystemSCOTS Surveilance and Control OfTransmission Systems

SCSI Small Computer Systems InterfaceSCUBA Self Contained Underwater Breathing ApparatusSCUD Subsonic Cruise Unarmed DecoySD South DakotaSDI Standard Disk InterconnectSDI Strategic Defense InitiativeSDLC Synchronous Data Link Control

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SDO Staff Duty OfficerSE South EastSEATO SouthEast Asia Treaty OrganizationSEC Security Exchange CommissionSECNAV SECretary of the NAVySED Stream EDitor SEI Software Engineering

Institute (Carnegie Mellon)SEL Software Engineering LaboratorySEM Scanning Electron MicroscopeSF San FranciscoSF Science Fiction, Speculative FictionSF Standard FormSF Star FrontiersSFRPG Science Fiction Role Playing GameSG StarGuardSG SubGroupSGML Standard Generalized Markup LanguageSHAPE Supreme Headquarters Allied Powers EuropeSHAR SHell ARchiver

SHCD Sherlock Holmes Consulting DetectiveSHF Super High Frequency (3-30GHz)SHRPG Super Hero Role Playing GameSI Staten IslandSIAM Society for Industrial and Applied MathematicsSIG Special Interest GroupSIGCAT Special Interest Group for Cd-rom

Applications TechnologySIMD Single Instruction, Multiple DataSIMM Single In-line Memory ModuleSIMM System Integrated Memory ModuleSINE SINE is not EINESIPS Satellite Imagery Processing System

SIS Strategic Information SystemSISCOM Satellite Information System COMpanySITA Societe Internationale Telecommunications

AeronautiquesSJ Society of JesusSL Salvage LossSLA Special Libraries AssociationSLA Synchronous Line AdapterSLAN Sine Loco, Anno, (vel) Nomine

(without place, year, or name)SLAR Side Looking Airborne RadarSLBM Submarine Launched Ballistic MissilesSLDC Synchronous Data Link Control

SLIP Serial Line Internet ProtocolSLP Super Long Play (VHS VCR)SM Service MarkSMA Sergeant Major of the ArmySMA Spectrum Manufacturers AssociationSMC Small Magellanic Cloud (see LMC)SMD Storage Module Device (interface standard

for disk drives)SMD Surface Mounted DevicesSMEGMA Sophisticated Modern Editor with Gloriously

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Magnificent AbilitiesSMERSH Abbr. of Russian phrase

meaning "Death to the spies."SMILS Sonobuoy Missile Impact Location SystemSMM Solar Maximum MissionSMTP Simple Mail Transfer ProtocolSN Super NovaSNA Systems Network Architecture (IBM network)SNADS SNA Distribution ServicesSNAFU Situation Normal-- All Fouled Up (also, F*cked)SNAP Shipboard Non-tactical Automated data

Processing programSNCF Societe National des Chemins de Fer

(French National Railways)SNF Server-Natural FormatSNMP Simple Network Management ProtocolSNOBOL StriNg Oriented symbOLic LanguageSNR Signal to Noise RatioSO Seller's OptionSO Significant Other

SO Space OperaSO Strike OutSOAP Symbolic Optimizing Assembler ProgramSOH Start Of Header, ASCII control

character (dec=01,control-A)SOHIO Standard Oil of oHIOSOL Short on Landing

(or, colloquially, Sh*t Out of Luck)SONAR SOund Detection And RangingSOP Standard Operating ProcedureSOS Silicon On SapphireSP Shore PatrolSP Short Play (VHS VCR)

SP Southern PacificSP Stack Pointer SP Star PatrolSPA Software Publishers AssociationSPAG Standards Promotion and Applications GroupSPAR Stock Points Adp ReplacementSPARC Scalable Processor ARChitectureSPARC Standards, Planning, And

Requirements CommitteeSPAWAR naval SPAce and WARfare commandSPC Software Productivity ConsortiumSPCA Society for the Prevention

of Cruelty to Animals

SPCC Society for the Preventionof Cruelty to ChildrenSPEC Systems Performance Evaluation CooperativeSPITBOL SPeedy ImplemenTation of snoBOLSPNI Society for the Protection of

Nature in IsraelSPUR Systech Pluraxial Unplug RepeaterSQL Structured Query LanguageSQUID Superconducting QUantum Interference DeviceSRAM Short Range Attack Missile

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SRAM Static RAMSRB Solid fuel Rocket BoosterSRI Stanford Research InstituteSRO Standing Room OnlySSA Social Security AdministrationSSB Single Side BandSSE South-SouthEastSSFF Showcase Software Factory of the FutureSSG Staff SerGeantSSI Small Scale IntegrationSSI Supplemental Security IncomeSSR Secondary Surveillance RadarSSR Soviet Socialist RepublicSSTV Slow Scan TeleVisionSSW South-SouthWestST Short TonSTARS Software Technology for Adaptable,

Reliable SystemsSTD Sacrae Theologiae Doctor (doctor of sacred

theology)

STD Sexually Transmitted Disease (replaces VD)STD State Transition DiagramSTD Subscriber Trunk Dialing (British for DDD)STILO Scientific and Technical Intelligence

Liaison OfficeSTL St. Louis (airport designation)STN SuperTwisted NematicSTOL Short TakeOff and LandingSTP Software Through PicturesSTP Standard Temperature and Pressure (see NTP)STRPG Star Trek: The Role-Playing GameSTV Single Transferable VoteSUM Symantec Utilities for Macintosh

SUNOCO SUN Oil COmpanySUNY State University of New YorkSVID System V Interface DefinitionSW South WestSW SuperWorldSWIFT Society for Worldwide Interbank

Financial CommunicationsSWS Scientific Workstation Support

T

T Traveler T&T Tunnels & TrollsTA Teaching AssistantTAC Tactical Air Command (see SAC)TAC Terminal Access ControllerTACCS Tactical Army Combat service support

Computer SystemTAE Transportable Applications EnvironmentTAR Tape ARchiver TB TuBerculosis

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TBA To Be AnnouncedTBD To Be DeterminedTC Teachers CollegeTCA Terminal Controlled AirspaceTCP/IP Transmission Control Protocol/Internet ProtocolTCSEC Trusted Computer System Evaluation

Criteria (orange book)TCT To Challenge TomorrowTD TouchDownTD Treasury DepartmentTDCC Transportation Data Coordinating CommitteeTDE Transition Diagram EditorTDI Trusted Database InterpretationTDY Temporary DutYTECO Tape Editor and COrrectorTECO Text Editor and COrrectorTEFLON polyTEtraFLuOrethyleNeTFP Tops Filing ProtocolTFS Translucent File SystemTFT The Fantasy Trip

TFT Thin Film TransistorTG Thieves' GuildTHIEF THief Isn't Even FineTHIEF This Here Isn't Even FineTHOR Tandy High-intensity Optical RecordingTI Texas InstrumentsTIA Thanks In Advance (special to USENET)TIA Transient Ischemic AttackTIC TermInfo Compiler TID Ter In Die (three times a day)TIFF Tag Image File FormatTKO Technical Knock OutTL Total Loss

TLA Three Letter AcronymTLC Tender Loving CareTLI Transort-Level InterfaceTM TradeMarkTMA Tycho Magnetic Anomaly (2001)TMAC Treasury department's Multiuser

Acquisition ContractTMIS Telecommunications Management Information SystemTMO Telephone Money OrderTMP The Morrow ProjectTN TennesseeTN Twisted NematicTNT TriNitro Toluene

TO Telegraph OfficeTO Turn Over TODS Transactions on Database Systems (ACM)TOMS Transactions on Mathematical Software (ACM)TOOIS Transactions on Office

Information Systems (ACM)TOP Technical/Office ProtocolTOPLAS Transactions on Programming Languages

and Systems (ACM)TORES Text ORiented Editing System

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TOW Tube launched, Optically tracked,and Wire guided

TP Transaction ProcessingTPC The Phone Company

(from classic movie: The President's Analyst)TPI Tracks Per InchTPO Traveling Post OfficeTPS Technical Publishing SoftwareTPS TeleProcessing ServicesTROFF Text RunOFF, text formatterTRUSIX TRUSted unIXTRW Thompson, Ramo, and WoolridgeTS Top SecretTSD Total System DesignTSP Teleprocessing Services ProgramTSP Thrift Savings PlanTSP Time Synchronization ProtocolTSP TriSodium PhosphateTSR TSR (Fortune 500 Company that

manufactures Dungeons & Dragons)

TTFN Tah Tah, For NowTTL Transistor Transistor LogicTTMA Tennessee Tech Microcomputer AssociationTTU Tennessee Technological UniversityTTY TeleTYpeTUNIS Toronto UNIversity SystemTV TeleVisionTVA Tennessee Valley AuthorityTW Thieves' WorldTWA Trans World AirlinesTWIMC To Whom It May ConcernTWT Traveling Wave TubeTWX TeletypeWriter eXchange

TX Texas

U

U UniverseUA United ArtistsUAR United Arab RepublicUAR User Action RoutineUART Universal Asynchronous Receiver TransmitterUBA UniBus AdapterUBC Universal Bibliographic Control

UCB University of California at BerkeleyUCD University of California at DavisUCI University of California at IrvineUCLA University of California at Los AngelesUCR University of California at RiversideUCSB University of California at Santa BarbaraUCSC University of California at Santa CruzUCSD University of California at San DiegoUCSF University of California at San FranciscoUDB Unified DataBase

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UDP User Data ProtocolUEC User Environment ComponentUFO Unidentified Flying ObjectUH Upper Half UHF Ultra High Frequency (300-3000MHz)UIMS User Interface Management SystemUK United KingdomUL Underwriters LaboratoryULANA Unified Local-Area Network ArchitectureUMT Universal Military TrainingUN United NationsUNESCO United Nations Educational, Scientific,

& Cultural OrganizationUNICEF United Nations International

Children's (Emergency) FundUNICS UNiplex Information Computer ServicesUNIX Not an acronym at all. Was a joke

on MIT's MULTICS.UNO United Nations OrganizationUP Union Pacific

UPC Universal Product CodeUPI United Press InternationalUPS Uninterruptible Power SupplyUPS United Parcel ServiceUR University of RochesterUSA Union of South AfricaUSA United States ArmyUSA United States of AmericaUSAF United States Air ForceUSAFA United States Air Force Academy

(in Colorado Springs)USC University of Southern CaliforniaUSCG United States Coast Guard

USDA United States Department of AgricultureUSES United States Employment ServiceUSFL United States Football LeagueUSGS United States Geological SurveyUSIA United States Information AgencyUSM United States MailUSMC United States Marine CorpsUSN United States NavyUSO United Service OrganizationsUSO Unix Software OperationUSP United States PharmacopeiaUSPS United States Postal ServiceUSR User Service Routines

USS United States ShipUSSR Union of Soviet Socialist RepublicsUSSS User Services and Systems SupportUSW Und So WeiterUT UTahUT Universal TimeUT University of TennesseeUT University of TexasUTC Universal Coordinated TimeUUCP Unix-to-Unix CoPy

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UUG Unix User GroupUV UltraVioletUW UnderWriter UW Univ of Wisconsin

V

V&V Villains & VigilantesVA Veterans AdministrationVA VirginiaVAN Value Added Network (e.g. Tymnet, Telenet, etc)VANS Value-Added Network ServicesVAR Value Added Remarketer (reseller)VASI Visual Approach Slope IndicatorVAT Value Added TaxVAX Virtual Address eXtendedVAXBI VAX Bus InterconnectVCM Voice Coil Motor

VCO Voltage Controlled OscillatorVCR VideoCassette RecorderVCU Virginia Commonwealth UniversityVD Venereal Disease (see also STD)VDFM Virtual Disk File ManagerVDI Virtual Device InterfaceVDM Vienna Development MethodVDM Virtual Device MetafileVDT Video Display TerminalVF Video FrequencyVFO Variable Frequency OscillatorVFW Volunteer Fire DepartmentVG Very Good

VG Vicar-GeneralVGA Video Graphics ArrayVHDL Vhsic Hardware Description LanguageVHF Very High Frequency (30-300MHz)VHS Video Home System (VCR)VHSIC Very High Speed Integrated CircuitVI VIsual editor VIABLE Vertical Installation Automation BaseLinEVILE VI Like EmacsVINE Vine Is Not EmacsVIP Very Important PersonVISTA Volunteers In Service To AmericaVITA Vme International Trade Association

VJ Video JockeyVL Vulgar LatinVLA Very Large Array radio telescope in

Arizona or New MexicoVLF Very Low Frequency (3-30KHz)VLIW Very Long Instruction WordVLSI Very Large Scale IntegrationVM Virtual MemoryVM/CMS Virtual Machine/Conversational Monitor SystemVMM Virtual Memory Manager

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VMOS Vertical Metal OxideSemiconductor (V-MOS)(see MOS)

VMR Vertical Market ResellerVMS Vertical Motion SimulatorVMS Virtual Memory SystemVOA Voice Of AmericaVOIS Voice-Operated Information SystemVOQ Visiting Officer's QuartersVPI&SU Virginia Polytechnic Institute and

State UniversityVRC Vertical Redundancy CharacterVRM Virtual Resource ManagerVSAT Very Small Aperture Terminal, satellite dishVSX X/open Verification SuiteVTAM Virtual Telecommunications Access MethodVTOC Volume Table Of ContentsVTOL Vertical TakeOff and LandingVTR VideoTape RecorderVUP Vax Unit of PerformanceVVSS Vertical Volute Spring Suspension

W

W WestW WidthWA WashingtonWA Western AustraliaWAC Womens Air CorpsWAN Wide Area NetworkWARC World Administrative ConferenceWATS Wide Area Telephone Service

WB Water BallastWB WayBillWBC White Blood CellsWC Water ClosetWC Without ChargeWCTU Women's Christian Temperance UnionWG Working GroupWH WarHammer WHBL World Home Bible LeagueWI WisconsinWIS WWMCCS Information SystemWITS Washington Interagency Telecommunications SystemWMSCR Weather Message Switching Center Replacement

WOPR War Operations Planned Response(from "Wargames" movie)WORM Write Once, Read Many timeWOW Worlds of WonderWP Word ProcessingWP Working Paper WSI Wafer Scale IntegrationWSW West-SouthWestWU Washington UniversityWV West Virginia

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WW World War WWI World War IWWII World War IIWWMCCS World-Wide Military Command

and Control SystemWY WyomingWYSIWIS What You See Is What I SeeWYSIWYG What You See Is What You Get

X Y Z

XCF eXperimental Computing FacilityXD without DividendXDR eXternal Data RepresentationXINU XINU Is Not UNIXXL eXtra LargeXMTR transMiTteR (the X is for trans)XNS Xerox Network Service

XO eXecutive Officer XOR eXclusive OR (logical function)XSECT cross SECTionXTAL crysTAL (another version

of x for crys, see XMTR)XUI X-windows User Interface

Y2K Year 2000YA Yet Another YACC Yet Another Compiler CompilerYB YearBookYMCA Young Mens Christian AssociationYMHA Young Mens Hebrew Association

YOB Year Of BirthYP Yellow PagesYRS Ysgarth Rules SystemYST Yukon Standard TimeYT Yukon TerritoryYT Yukon TimeYTD Year To DateYWCA Young Womens Christian AssociationYWHA Young Womens Hebrew Association

Z ZenithZ ZeroZB Zero Beat

ZETA Zero Energy Thermonuclear AssemblyZGS Zero Gradient SynchrotronZI Zonal IndexZIP Zone Improvement Plan (post office code)ZK barrage balloon (navy symbol)ZMRI Zinc Metals Research InstituteZPG Zero Population GrowthZPRSN Zurich Provisional Relative Sunspot NumberZST Zone Standard TimeZT Zone Time

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ZWEI Zwei Was Eine Initially

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