Acronym database

[Dave Sill]

Public Domain Acronym/Abbreviation Database

Disclaimer: provided without warranty as a public service.  Use at
your own risk.

Send batches of updates to de5 at ornl.gov

--8<--cut-here----
2D	- 2-Dimensional
3D	- 3-Dimensional
3M	- Minnesota Mining and Manufacturing
4GL	- Fourth Generation Language
4H	- Head, Heart, Hands, Health
A	- Aftermath
A&M	- Agricultural and Mechanical
A/D	- Analog to Digital converter (see ADC)
A/P	- Accounts Payable
A/R	- Accounts Receivable
AA	- Affirmative Action committee
AA	- Alcoholics Anonymous
AA	- Antiaircraft Artillery
AA	- Associate in Accounting
AA	- Automobile Association (in England)
AAA	- American Automobile Association
AAAAAA	- the Association for the Abolition of Abused Abbreviations and Asinine Acronyms
AAAL	- American Academy of Arts and Letters
AAAS	- American Association for the Advancement of Science  -  A.A.A.S
AAII	- American Association of Individual Investors
AAMSI	- American Association for Medical Systems Informatics
AAP	- Affirmative Action Program
AARC	- Anglo-American Cataloging Rules
AB	- ABle seaman
ABA	- American Bar Association
ABA	- American Basketball Association
ABA	- American Booksellers Association
ABBR	- ABBReviation
ABC	- American Broadcasting Company
AC	- Alternating Current (ac, see also DC)
AC	- Ante Christum (before Christ)
AC	- Ante Cibum (before meals)
ACAA	- Agricultural Conservation and Adjustment Administration
ACAWS	- Advisory, Caution, And Warning System
ACBL	- American Contract Bridge League
ACC	- Argonne Code Center
ACCS	- Army Command and Control System
ACD	- Automatic Call Distributing system 
ACE	- Automatic Calibration and Equalization
ACHEFT	- Automated ClearingHouse Electronic Funds Transfer
ACK	- ACKnowledge
ACL	- Advanced Cmos Logic
ACM	- Association for Computing Machinery
ACO	- Acronym Control Officer
ACS	- Advanced Communications System
ACTS	- Advanced Communications Technology Satellite
ACTS	- Automatic Coin Telephone Service 
ACU	- Alarm Control Unit
ACW	- Alternating Continuous Waves
AD	- After Date
AD	- Anno Domini (in the year of our Lord)
AD	- Application Development
AD&D	- Advanced Dungeons & Dragons
ADB	- A DeBugger
ADB	- Apple Desktop Bus
ADC	- Analog to Digital Converter
ADCI	- Automatic Display Call Indicator 
ADF	- Automatic Direction Finder
ADM	- ADMiral
ADP	- Adenosine Di-Phosphate
ADP	- Administrative Data Processing
ADP	- Advanced Data Processing
ADS	- Application Development System
ADS	- Automatic Voice System
ADSR	- Attack Decay Sustain Release
ADT	- Abstract Data Type
ADT	- Atlantic Daylight Time
AE	- Application Execution
AEA	- American Electronics Association
AEC	- Atomic Energy Commission
AEF	- American Expeditionary Force (see BEF)
AEGIS	- Advanced Electronic Guidance and Instrumentation System
AF	- Adventures in Fantasy
AF	- Air Force
AF	- Audio Frequency
AFADS	- Automatic Force Adjustment Data System 
AFATDS	- Advanced Field Artillery Tactical Data System
AFB	- Air Force Base
AFC	- American Football Conference
AFC	- Automatic Flight Control
AFC	- Automatic Frequency Control
AFCAC	- Air Force Computer Acquisition Center
AFCC	- Air Force Communications Command
AFGE	- American Federation of Government Employees
AFIPS	- American Federation of Information Processing Societies
AFL	- American Federation of Labor
AFL	- American Football League
AFLCIO	- American Federation of Labor and Congress of Industrial Organizations
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
AFTRA	- American Federation of Television and Radio Artists
AG	- Adjutant General
AG	- Arcade Game
AG	- Attorney General
AGCT	- Army General Classification Test
AH	- Avalon Hill (major war game manufacturer)
AHL	- American Hockey League
AHQ	- Air HeadQuarters
AI	- Artificial Intelligence
AIAA	- American Institute of Aeronautics and Astronautics
AIC	- Automatic Intercept Center 
AID	- Agency for International Development
AIDDE	- Ames' Interactive Dynamic Display Editor
AIDS	- Acquired ImmunoDeficiency Syndrome
AIOD	- Automatic Identification Outward Dialing 
AIS	- Automatic Intercept System
AIX	- Advanced Interactive eXecutive (unix)
AK	- Alaska
AKA	- Also Known As
AL	- Alabama
AL	- American League (baseball)
ALA	- American Library Association
ALA	- Automobile Legal Association
ALBM	- Air-to-Land Ballistic Missile
ALC	- Automatic Load Control
ALGOL	- ALGOrithmic Language
ALU	- Arithmetic Logic Unit
AM	- Amplitude Modulation
AM	- Ante Meridiem (before noon)
AMA	- American Medical Association
AMA	- Automatic Message Accounting 
AMARC	- Automatic Message Accounting Recording Center 
AMBA	- Association of Master of Business Administration
AMC	- Albany Medical College
AMD	- Advanced Micro Devices
AMEX	- AMerican EXpress
AMORC	- Ancient Mystic Order Rosae Crucis
AMP	- Adenosine MonoPhosphate
AMPAS	- Academy of Motion Picture Arts and Sciences
AMRAAM	- Advanced Medium Range Air-To-Air Missile
AMSAT	- radio AMateur SATellite corp.
AMU	- Atomic Mass Unit
AMVET	- AMerican VETeran
ANA	- American Nurses Association
ANC	- All Number Calling 
ANC	- Army Nurse Corps
ANDF	- Architecture-Neural Distribution Format
ANF	- Automatic Number Forwarding 
ANG	- Air National Guard
ANI	- Automatic Number Identification
ANL	- Argonne National Laboratory
ANOVA	- ANalysis Of VAriance
ANPA	- American Newspaper Publishers Association
ANSI	- American National Standards Institute
ANZUS	- Australia, New Zealand, United States
AO	- Account Of
AOL	- Absent Over Leave (see AWOL)
AOS	- Academic Operating System
AP	- Additional Premium
AP	- All Points
AP	- Associated Press
APA	- All Points Addressable
APB	- All Points Bulletin
APDA	- Apple Programmers and Developers Association
API	- Application Programming Interface
APICS	- American Production and Inventory Control Society
APO	- Army Post Office
APP	- Applications Portability Profile
APPC	- Advanced Peer-to-Peer Communications
APR	- Annual Percentage Rate (as in loan interest)
APSE	- Ada Programming Support Environment
AQ	- Accumulator-Quotient register
AR	- Address Register
AR	- Arkansas
ARC	- American Red Cross
ARCNET	- Attached Resource Computer local area NETwork
ARO	- After Receipt of Order
ARPA	- Advanced Research Projects Agency
ARPANET	- Advanced Research Projects Agency NETwork
ARRL	- Amateur Radio Relay League
ARV	- American Revised Version
AS	- Anglo-Saxon
ASA	- Acetyl Salicylic Acid
ASAP	- As Soon As Possible
ASC	- Accredited Standards Committee
ASCAP	- American Society of Composers, Authors, and Publishers
ASCC	- Automatic Sequence-Controlled Calculator
ASCII	- American Standard Code for Information Interchange
ASDIC	- Anti-Submarine Detection Investigation Committee (British for sonar)
ASDSP	- Application-Specific Digital Signal Processor
ASG	- Automated Sciences Group
ASHRAE	- Amer. Soc. of Heating, Refrigerating and Air-cond. Engineers, inc.
ASIC	- Application Specific Integrated Circuit
ASME	- American Society of Mechanical Engineers
ASP	- Aggregated Switch Procurement
ASSR	- Autonomous Soviet Socialist Republic
AST	- Atlantic Standard Time
ASV	- American Standard Version
AT	- Atlantic Time
AT&T	- American Telephone & Telegraph
ATA	- Automatic Trouble Analysis 
ATACC	- Advanced Tactical Air Command Central
ATB	- Advanced Technology Bomber (stealth bomber)
ATC	- Air Traffic Control
ATF	- Advanced Technology Fighter
ATIS	- Atherton Tools Interface Specification
ATM	- Automatic Teller Machine
ATOMS	- AT&t Optimized Materials Simulator
ATP	- Adenosine TriPhosphate
ATPCO	- Airline Tariff Publishing COmpany
ATTIS	- American Telephone and Telegraph Information Systems
ATV	- All Terrain Vehicle
AUS	- Army of the United States
AUTODIN	- AUTOmatic DIgital Network
AUTOVON	- AUTOmatic VOice Network
AV	- AudioVisual
AVLIS	- Atomic Vapor Laser Isotope Separation
AWACS	- Airborne Warnings And Control Systems
AWEA	- American Wind Energy Association
AWK	- al Aho, peter Weinberger, brian Kernighan (pattern scanning language)
AWOL	- Absent WithOut Leave (also Absent Without Official Leave) (see AOL)
AZ	- Arizona
ApJ	- Astrophysical Journal   -    Ap J
B	- Book
BA	- Bachelor of Arts
BACH	- Business Alliance for Commerce in Hemp
BAFO	- Best And Final Offer
BASIC	- Beginner's All-purpose Symbolic Instruction Code
BB	- Bases on Balls
BB	- Best of Breed
BB	- Bunnies and Burrows
BBA	- Bachelor of Business Administration
BBB	- Better Business Bureau
BBC	- British Broadcasting Corporation
BBL	- Barrel
BBN	- Bolt, Beranek, and Newman
BC	- Battlecars
BC	- Before Christ
BC	- British Columbia
BC/BS	- Blue Cross/Blue Shield
BCD	- Bad Conduct Discharge
BCD	- Binary Coded Decimal
BCDIC	- Binary Coded Decimal Interchange Code
BCE	- Before the Common Era (substitute for BC)
BCP	- Byte Controlled Protocols
BCPL	- Basic Combined Programming Language
BCS	- Bachelor of Commercial Science
BCS	- Binary Compatibility Standard
BCS	- Boston Computer Society
BCS	- British Computer Society
BD	- Bachelor of Divinity
BD	- Bank Draft
BD	- Bills Discounted
BD&D	- Basic Dungeons & Dragons
BDF	- Binary Distribution Format
BDT	- Billing Data Transmitter
BE	- Bill of Exchange
BEF	- British Expeditionary Force (see AEF)
BELCORE	- BELL COmmunications REsearch
BEM	- Bug Eyed Monster
BENELUX	- BElgium, NEtherlands, and LUXembourg
BER	- Bit Error Rate
BEST	- Borland Enhanced Support and Training
BF	- Brought Forward
BFA	- Bachelor of Fine Arts
BFD	- Big F***ing Deal
BFHD	- Big Fat Hairy Deal
BH	- Boot Hill
BHP	- Brake HorsePower
BICS	- Building Industry Consulting Services
BID	- Bis In Die (twice a day)
BIOC	- Break Into Other Computers
BIOS	- Basic Input Output System
BIS   	- Business Information System
BLAST	- BLocked ASynchronous Transmission
BLF   	- Busy Line Field
BLT	- BLock Transfer
BLT	- Bacon, Lettuce, and Tomato
BM	- Basal Metabolism
BM	- Bowel Movement
BMA	- Bank Marketing Association
BMEWS	- Ballistic Missile Early Warning
BMO	- Ballistic Missile Office
BMOC	- Big Man On Campus
BMR	- Basal Metabolism Rate
BNF	- Bachus-Naur Form
BO	- Body Odor
BO	- Branch Office
BO	- Buyer's Option
BOC   	- Bell Operating Company
BOD	- Board Of Directors
BOF	- Birds Of a Feather
BOM	- Bill Of Materials
BOQ	- Bachelor Officers' Quarters
BOS   	- Business Office Supervisor
BOSIX	- Biin Open System Interface eXtension
BP	- Blood Pressure
BP	- British Pharmacopoeia
BPI	- Bits Per Inch
BPOE	- Benevolent and Protective Order of Elks
BPS	- Bits Per Second
BR	- Bills Receivable
BR	- British Rail
BRIEF	- Basic Reconfigurable Interactive Editing Facility
BRL	- army Ballistic Research Laboratory
BRS	- Bibliographic Retrieval Service
BS	- Bachelor of Science
BS	- Bill of Sale
BSA	- Birmingham Small Arms
BSA	- Boy Scouts of America
BSC   	- Binary Synchronous Communication
BSD	- Berkeley Software Distribution
BSN	- Bachelor of Science in Nursing
BSS	- Block Started by Symbol
BSTJ	- Bell System Technical Journal
BSc	- Bachelor of SCience
BTL	- Bell Telephone Laboratories
BTO	- Bachman Turner Overdrive
BTU	- British Thermal Unit
BTW	- By The Way
BThU	- British Thermal Unit
BU	- Bushido
BV	- Blessed Virgin
BWI	- Baltimore-Washington International (airport)
BWI	- British West Indies
BX	- Base eXchange (see PX)
Bit	- BInary digiT
C	- programming language, successor to BCPL
C&S	- Chivalry & Sorcery
C/O	- in Care Of
CA	- California
CA	- Chartered Accountant
CA	- Chief Accountant
CA	- Chronological Age
CAB	- Civil Aeronautics Board
CACM	- Communications of the Association for Computing Machinery
CAD	- Computer Aided Design (sometimes seen as CAD/CAM)
CAE	- Common Applications Environment
CAE	- Computer Aided Engineering
CAIS	- Common Apse Interface Specification
CALS	- Computer-aided Acquisition and Logistics Support
CAM	- Computer Aided Management
CAM	- Computer Aided Manufacturing (sometimes seen as CAD/CAM)
CAM	- Content Addressable Memory
CAMA	- Centralized Automatic Message Accounting
CAMP	- Campaign Against Marijuana Planting
CAP	- Civil Air Patrol
CAP	- Columbia Appletalk Package
CAR	- Contents of the Address part of the Register
CASE	- Computer Aided Software Engineering
CASSIS	- Classification and Search Support Information System
CAT	- Computer-Aided Tomography
CATIS	- Common Applications and Tools Integration Services
CATV	- Community Antenna TeleVision
CAVU	- Ceiling And Visibility Unlimited
CB	- Citizens Band radio
CBC	- Canadian Broadcasting Corporation
CBD	- Cash Before Delivery
CBD	- Commerce Business Daily
CBEMA	- Computer & Business Equipment Manufacturers Association
CBR	- Chemical, Biological, Radiological warfare
CBS	- Columbia Broadcasting System
CBW	- Chemical and Biological Warfare
CC	- Carbon Copy
CCA	- Computer Corporation of America
CCC	- Canadian Committee on Cataloging
CCC	- Civil(ian) Conservation Corps
CCC	- Command, Control, and Communications
CCCCM	- CCC CounterMeasures (sometimes C^3CM)
CCCI	- Command, Control, Communications, and Intelligence
CCD	- Charge Coupled Device (see CID)
CCI	- Computer Carrier Interrupt
CCI	- Computer Consoles, Incorporated
CCIP	- Continuously Computed Impact Point
CCIS	- Common Channel Interoffice Signaling
CCITT	- Comite' Consultatif International Telegraphique et Telephonique
CCR	- Commitment, Concurrency, and Recovery
CCR	- Creedence Clearwater Revival
CCRP	- Continuously Computed Release Point
CCSA	- Common Control Switching Arrangement
CCTA	- Central Computer and Telecommunications Agency
CCTV	- Closed Circuit TeleVision
CD	- Certificate of Deposit
CD	- Civil Defense
CD	- Compact Disk
CD-ROM	- Compact Disk Read Only Memory
CDA	- Call Data Accumulator
CDA	- Compound Documents Architecture
CDC	- Centers for Disease Control
CDC	- Control Data Corporation, inc.
CDEV	- Control panel DEVice
CDIAC	- Carbon Dioxide Information Analysis Center
CDO	- Community Dial Office
CDR	- CommanDeR
CDR	- Contents of the Decrement part of the Register
CDT	- Central Daylight Time
CDU	- Control Display Unit
CE	- Chemical Engineer
CE	- Civil Engineer
CE	- Common Era (substitute for AD)
CE	- Corps of Engineers
CE	- Customer Engineer
CEA	- Council of Economic Advisors
CEA	- County Education Authority
CEC	- Commission of the European Communities
CED	- Committee for Economic Development
CENS	- Centre d'Etudes Nucleaires de Seclay
CENTO	- CENtral Treaty Organization
CEO	- Chief Executive Officer
CERN	- organisation (formerly Conseil) Europeenne pour la Recherche Nucleaires
CERT	- Computer Emergency Response Team
CEVI	- Common Equipment Voltage Indicator
CF	- Carry Forward
CF	- Coin First payphone
CFC	- Chloro-FluoroCarbon
CFC	- Combined Federal Campaign
CFD	- Computational Fluid Dynamics
CFI	- Cost, Freight, and Insurance
CFL	- Canadian Football League
CFO	- Chief Financial Officer
CG	- Coast Guard
CG	- Commanding General
CG&E	- Cincinnati Gas & Electric
CGA	- Color Graphics Adapter
CGCT	- Compagnie Generale de Constructions Telephoniques
CGE	- Compagnie Generale d'Electricite
CH	- Cardboard Heroes
CH	- ClearingHouse
CH	- CourtHouse
CH	- Customs House
CHA	- Champions
CHAP	- CHAnnel Processor
CHI	- Chill:  Adventures into the Unknown
CHOTS	- Corporate Headquarters Office Technology System
CHP	- California Highway Patrol
CI	- Cubic Inches
CIA	- Central Intelligence Agency
CICA	- Competition in Contracting Act
CICS	- Customer Information Control System
CID	- Central Institute for the Deaf
CID	- Charge Injection Device (see CCD)
CID	- Computer Integrated Design
CIDIN	- Common Icao Data Interchange Network
CIM	- Computer Integrated Manufacturing
CIO	- Chief Information Officer
CISC	- Complex Instruction Set Computer
CIT	- California Institute of Technology
CIT	- Case Institute of Technology (part of CWRU, Cleveland, OH)
CLASP	- Comprehensive Logistics Automated Support Program
CLI	- Command Line Interpreter
CLR	- Combined Line and Recording
CLRC	- Circuit Layout Record Card
CLU	- Chartered Life Underwriter
CLUT	- Color LookUp Table
CM	- Congregation of the Mission
CMC	- Communication Machinery Corp.
CMD	- Centralized Message Distribution
CML	- Current Model Logic
CMMU	- Cache/Memory Management Unit
CMOS	- Complementary Metal Oxide Semiconductor (see MOS)
CMRR	- Common Mode Rejection Ratio
CMS	- Circuit Maintenance System
CMSgt	- Chief Master Sergeant
CMU	- Carnegie-Mellon University
CMYK	- Cyan, Magenta, Yellow, blacK
CN	- Canadian National (railways)
CN/A	- Customer Name / Address
CNN	- Cable News Network
CNO	- Chief of Naval Operations
CNR	- Canadian National Railways
CNR	- Carrier to Noise Ratio
CNS	- Central Nervous System
CO	- Cash Order
CO	- Central Office
CO	- Central Office (telephony)
CO	- Colorado
CO	- Commanding Officer
CO	- Conscientious Objector
COB	- Close Of Business
COBOL	- COmmon Business Oriented Language
COC	- Call of Cthulhu
COD	- Collect On Delivery; Cash On Delivery
CODEC	- COder-DECoder
COER	- Central Office Equipment Report
COLA	- Cost-Of-Living Allowance
COMAS	- Central Office Maintenance and Administration System
COMPACT	- COMmercial Product ACquisition Team
CONS	- Connection-Oriented Networking Session
CORE	- COntrolled Requirement Expression
CORN	- COmputer Resource Nucleus
COS	- Corporation for Open Systems
COSMIC	- COmmon System Main InterConnecting frame
COSMIC	- COmputer Software Management and Information Center
COSMOS	- COmputer System for Mainframe OperationS
CP	- Canadian Pacific
CP	- Chemically Pure
CP	- CoPy
CP	- Command Post
CP	- Command Processor
CP	- the Canadian Press
CPA	- Certified Public Accountant
CPFF	- Cost Plus Fixed Fee
CPI	- Characters Per Inch
CPI	- Common Programming Interface
CPL	- Combined Programming Language
CPM	- Control Program for Microcomputers (sometimes CP/M)
CPO	- Chief Petty Officer
CPO	- Chief Post Office
CPO	- Customer Premises Equipment
CPR	- Canadian Pacific Railway
CPS	- Characters Per Second
CPSR	- Computer Professionals for Social Responsibility
CPT	- CaPTain
CPU	- Central Processor Unit
CPW	- Certified Public Weigher
CQ	- Change of Quarters
CQ	- Charge of Quarters
CR	- Carriage Return (ASCII 15 octal)
CRAM	- Card Random Access Memory
CRC	- Chemical Rubber Company
CRC	- Cyclical Redundancy Character
CREG	- Concentrated Range Extension with Gain
CRT	- Cathode Ray Tube (also generic reference to a terminal)
CRTC	- Canadian Radio-television and Telecommunications Commission
CS	- Civil Servant
CS	- Computer Science; Computing Science
CS	- County Seat
CSA	- Confederate States of America
CSAB	- Computing Sciences Accreditation Board
CSACS	- Centralized Status, Alarm and Control System
CSC	- Computer Sciences Corporation
CSDC	- Circuit Switched Digital Capability
CSF	- Critical Success Factor
CSI	- Commercial Systems Integration
CSIS	- Canadian Security and Intelligence Service
CSL	- Coin Supervising Link 
CSM	- Command Sergeant Major
CSMA/CD	- Carrier Sense Multiple Access/Collision Detection
CSO	- Central Services Organization
CSOC	- Consolidated Space Operations Center (at Colorado Springs)
CSP	- Control Switching Point
CSR	- Control and Status Register
CSRG	- Computer Systems Research Group
CSRS	- civil Service Retirement System
CSS	- Customer Switching System
CST	- Central Standard Time
CT	- Central Time
CT	- Connecticut
CTC	- Canadian Transport Commission
CTC	- Centralized Traffic Control (railways)
CTD	- Computing and Telecommunications Division
CTIO	- Cerro Tololo Inter-american Observatory
CTNE	- Compania Telefonica Nacional de Espana
CTS	- Compatible Timesharing System
CTV	- Canadian TeleVision network
CU	- Close-Up
CUA	- Common User Access
CV	- Curriculum Vitae
CW	- Car Wars
CW	- Chemical Warfare
CW	- Child Welfare
CW	- Churchwarden
CW	- Continuous Wave
CWO	- Cash With Order
CWO	- Chief Warrant Officer
CWRU	- Case Western Reserve University
CXI	- Common X-windows Interface
CY	- Calendar Year
CYO	- Catholic Youth Organization
CZ	- Canal Zone
D	- Depth
D&D	- Dungeons & Dragons
D/A	- Digital to Analog converter
D/F	- Direction Finding
DA	- Days after Acceptance
DA	- Department of Agriculture
DA	- Deposit Account
DA	- Directory Assistance (/C = computerized, /M = Microfilm)
DA	- District Attorney
DA	- Don't Answer
DAC	- Digital to Analog Converter
DACCS	- Digital Access Cross Connect System
DAD	- Draft ADdendum
DAR	- Daughters of the American Revolution
DARPA	- Defense Advanced Research Projects Agency
DASD	- Direct Access Storage Device
DAT	- Digital Audio Tape
DATA	- Defense Air Transport Administration
DAV	- Disabled American Veterans
DB	- DataBase
DB	- DeciBels
DBF	- DBase Format
DBME	- DataBase Managment Environment
DBMS	- DataBase Management System (rdbms for Relational ...)
DBRAD	- Data Base Relational Application Directory
DC	- Direct Current (dc, see also AC)
DC	- District of Columbia
DCA	- Defense Communications Agency
DCA	- Distributed Communication Architecture
DCA	- Document Content Architecture
DCC	- Descriptive Cataloging Committee
DCCO	- Defense Commercial Communications Office
DCE	- Data Communication Equipment
DCL	- Digital Command Language
DCP	- Distributed Communications Processor
DCTS	- Dimension Custom Telephone Service
DD	- Daredevils
DD	- Data Dictionary
DD	- Days after Date
DD	- Demand Draft
DD	- Dishonorable Discharge
DD	- Disk Drive
DD	- Doctor of Divinity
DDC	- Digital Data Converter
DDD	- Direct Distance Dial(ing)
DDL	- Document Description Language
DDN	- Defense Data Network
DDP	- Distributed Data Processing
DDS	- Doctor of Dental Science
DDS	- Doctor of Dental Surgery
DE	- Delaware
DEA	- Drug Enforcement Agency
DEAR	- Department of Energy Acquisition Regulation
DEC	- Digital Equipment Corporation
DES	- Data Encryption Standard
DEW	- Distant Early Warning (as in DEW Line)
DF	- Damage Free
DF	- Direction Finding
DFC	- Distinguished Flying Cross
DFD	- Data Flow Diagram
DFE	- Data Flow Editor
DFM	- Distinguished Flying Medal
DFS	- Depth-First Search
DFW	- Dallas-Ft.Worth (regional airport)
DG	- Dei Gratia (by the grace of God)
DG	- Director General
DGSC	- Defense General Supply Center
DHHS	- Department of Health and Human Services
DHSS	- british Department of Health and Social Security
DIA	- Document Interchange Architecture
DIAD	- (magnetic) Drum Information Assembler / Dispatcher
DIAL	- Direct Information Access Line
DIAS	- Defense Automatic Integrated System
DID	- Direct Inward Dialing
DIF	- Document Interchange Format
DIN	- Deutsches Institut fur Normung
DIRE	- Dire Is Really Emacs
DIS	- Draft International Standard (ISO)
DISOSS	- DIStributed Office Support System
DIY	- Do It Yourself
DJ	- Disc Jockey
DLA	- Defense Logistics Agency
DLL	- Dial Long Line equipment
DLO	- Dead Letter Office
DM	- Dungeon Master
DMA	- Direct Memory Access
DMD	- Doctor of Dental Medicine
DME	- Distance Measuring Equipment
DMOS	- Diffusion Metal Oxide Semiconductor (see MOS)
DMV	- Department of Motor Vehicles
DMZ	- DeMilitarized Zone
DNA	- DeoxyriboNucleic Acid
DNA	- Digital Network Architecture
DNHR	- Dynamic NonHierarchical Routing
DNIC	- Data Network Identification Code
DNL	- Director of Naval Laboratories
DNR	- Dialed Number Recorder
DOA	- Dead On Arrival
DOB	- Date Of Birth
DOC	- Dynamic Overload Control
DOD	- Department Of Defense
DOE	- Department of Energy
DOMAIN	- Distributed Operating Multi Access Interactive Network (Apollo)
DOS	- Disk Operating System
DOT	- Department Of Transportation
DOT&E	- Director, Operational Test and Evaluation
DP	- Data Processing
DP	- Dial Pulse
DP	- Displaced Persons (expelled from native land)
DP	- Display Postscript
DP	- Double Play
DP	- Draft Proposal
DPA	- Delegation of Procurement Authority
DPANS	- Draft Proposed American National Standard
DPI	- Dots Per Inch
DPS	- Display PostScript
DQ	- Dairy Queen
DQ	- Dragon Quest
DQL	- Database Query Language
DR	- Dead Reckoning
DR	- Dining Room
DRAM	- Dynamic Random Access Memory (as opposed to static RAM)
DRD	- Data Reading Device
DRE	- Directional Reservation Equipment
DRG	- Democratic Republic of Germany (East Germany)
DRI	- Digital Research, Incorporated
DS	- Double-Sided
DSA	- Dial System Assistance
DSE	- Data Structure Editor
DSEE	- Domain Software Engineering Environment
DSM	- Distinguished Service Medal
DSO	- Distinguished Service Order
DSP	- Decessit Sine Prole (died without issue)
DSP	- Digital Signal Processing
DSRI	- Digital Standard Relational Interface
DSS	- Decision Support System
DSS	- Direct Station Selection
DST	- Daylight Saving Time
DSTN	- Double SuperTwisted Nematic
DT	- Delirium Tremens
DTE	- Data Terminal Equipment
DTF	- Dial Tone First payphone
DTMF	- Dial Tone Multi Frequency
DTP	- DeskTop Publishing
DTR	- Data Terminal Ready
DUI	- Driving Under the Influence
DUT	- Device Under Test
DV	- Deo Vo lente (God willing)
DVM	- Digital Volt Meter
DVM	- Doctor of Veterinary Medicine
DWAPS	- Defense Warehousing Automated Processing System
DWI	- Driving While Intoxicated
DWIM	- Do What I Mean
DX	- Distance (as in long distance radio communication)
DXT	- Data eXtractT facility
E	- East
E	- Espionage
E&EO	- Errors and Omissions Excepted
E-MAIL	- Electronic MAIL
EADASS	- Engineering and Administrative Data AcquiSition System
EAS	- Extended Area Service (or Engineering Admin. System) 
EBCDIC	- Extended Binary Coded Decimal Interchange Code
ECAFE	- Economic Commission for Africa and the Far East
ECASS	- Electronically Controlled Automatic Switching System
ECASS	- Export Control Automated Support System
ECC	- Error Correction Code
ECCM	- Electronic Counter-CounterMeasures
ECDO	- Electronic Community Dial Office
ECG	- ElectroCardioGram
ECL	- Emitter Coupled Logic (see also TTL)
ECM	- Electronic Counter Measure
ECM	- European Common Market
ECO	- Electronic Central Office
ECO	- Engineering Change Order
ECT	- ElectroConvulsive Therapy
ED&D	- Expert Dungeons & Dragons
EDGAR	- Electronic Data Gathering, Analysis, and Retrieval
EDI	- Electronic Data Interchange
EDIF	- Electronic Design Interchange Format
EDP	- Electronic Data Processing
EDS	- Electronic Data Systems
EDT	- Eastern Daylight Time
EDTA	- Ethylene Diamine Tetraacetic Acid
EDTCC	- Electronic Data Transmission Communications Central
EE	- Electrical Engineer
EE	- Electrical or Electronics Engineer
EEC	- European Economic Community
EEG	- ElectroEncephaloGram
EEL	- Epsilon Extension Language
EEPROM	- Electrically Erasable Programmable Read Only Memory
EGA	- Enhanced Graphics Adapter
EHF	- Extremely High Frequency (30-300GHz)
EINE	- EINE Is Not Emacs
EISA	- Extended Industry-Standard Architecture
EISS	- European Intelligence Support System
EKG	- ElectroKardioGramm (see ECG)
EL	- ElectroLuminescent (as in display)
ELF	- Extremely Low Frequency
ELO	- Electric Light Orchestra
ELP	- Emerson, Lake and Palmer (or Powell)
EM	- Enlisted Man (see EW)
EMA	- Electronic Mail Association
EMACS	- Editor MACroS
EMACS	- Eight Megabytes And Constantly Swapping
EMF	- ElectroMotive Force
EMI	- ElectroMagnetic Interference
EMP	- Electromagnetic Pulse
EMPRESS	- EnvironMental Pulse Radiation Environment Simulator for Ships
EMR	- ElectroMagnetic Response
EMS	- Electronic Message System
EMS	- Extended Memory Specification
EMT	- Emergency Medical Technician
EMU	- ElectroMagnetic Unit
ENIAC	- Electronic Numerical Integrator and Calculator
ENS	- ENSign
EO	- End Office
EO	- Erasable Optical
EOF	- End Of File
EOM	- End Of Month
EP	- Experience Points
EP	- Extended Play
EPA	- Environmental Protection Agency
EPOS	- Engineering and Project-management Oriented Support system
EPRI	- Electric Power Research Institute
EPROM	- Erasable Programmable Read Only Memory
EPS	- Encapsulated PostScript
EPT	- Empire of the Petal Throne
EQ	- Educational Quotient (see IQ)
ER	- Emergency Room
ERA	- Earned Run Average
ERA	- Entity-Relationship-Attribute
ERA	- Equal Rights Amendment
ERD	- Entity-Relation Diagram
ERE	- Entity Relationship Editor
ES	- Expert System
ESA	- European Space Agency
ESAC	- Electronic Systems Assistance Center
ESDI	- Enhanced Standard Device Interface
ESE	- East South East
ESM	- Electronic Support Measures
ESO	- European Southern Observatory
ESP	- Extra Sensory Perception
ESPS	- Entropic Signal Processing System
ESS	- Electronic Switching System
ESSEX	- Experimental Solid State EXchange
EST	- Eastern Standard Time
ET	- Eastern Time
ET	- ExtraTerrestrial
ETA	- Estimated Time of Arrival
ETC	- Et cetera, and so on...
ETD	- Estimated Time of Departure
ETFD	- Electronic Toll Fraud Device
ETH	- Eidgnoessiche Techniche Hochschule
ETS	- Electronic Translator System
ETV	- Education TeleVision
EUUG	- European Unix User Group
EVA	- ExtraVehicular Activity
EVX	- Electronic Voice eXchange
EW	- Electronic Warfare
EW	- Enlisted Woman (see EM)
EWOS	- European Workshop for Open Systems
FA	- Football Association (British soccer--a word derived from Association)
FAA	- Federal Aviation Agency
FACD	- Foreign Area Customer Dialing
FAO	- Food and Agriculture Organization of the united states
FAR	- Federal Acquisition Regulations
FAS	- Foreign Agricultural Service
FAS	- Free Alongside Ship
FASST	- Flexible Architecture Standard System Technology
FAT	- Foreign Area Translation
FAX	- FAcsimile
FB	- Freight Bill
FBI	- Federal Bureau of Investigation
FCC	- Federal Communication Commission
FCC	- Federal Computer Conference
FDA	- Food and Drug Administration
FDDI	- Fiber Distributed Data Interface
FDHD	- Floppy Drive High Density
FDIC	- Federal Deposit Insurance Corporation
FDM	- Frequency Division Multiplexing
FDR	- Franklin Delano Roosevelt
FEA	- Finite Element Analysis
FEDSIM	- FEDeral Systems Integration and Management center
FEMA	- Federal Emergency Management Agency
FEPC	- Fair Employment Practices Commission
FERS	- Federal Employees Retirement System
FET	- Federal Excise Tax
FET	- Field Effect Transistor
FFA	- Future Farmers of America
FFT	- Fast Fourier Transform
FHA	- Federal Home Administration
FHA	- Future Homemakers of America
FIB	- Focused Ion Beam
FICA	- Federal Insurance Contributions Act
FIDO	- Fog Investigation Dispersal Operation
FIFO	- First In First Out (as in registers and buffers)
FILO	- First In Last Out (see also FIFO)
FIMS	- Forms Interface Management System
FINE	- FINE Is Not Emacs
FIO	- Frequency In and Out
FIPS	- Federal Information Processing Standard
FIR	- Finite Impulse Response
FIRMR	- Federal Information Resource Management Regulation
FIT	- Federal Information Technologies, inc.
FL	- Florida
FLACC	- Full Level Algol Checkout Compiler
FLOPS	- FLoating-point OPerations per Second
FLRA	- Federal Labor Relations Authority
FM	- Frequency Modulation
FMB	- Federal Maritime Board
FMCS	- Federal Mediation and Conciliation Service
FMS	- Financial Management Service (Treasury Dept)
FMS	- Forms Management System
FO	- Foreign Office
FO	- Forward Observer
FOAC	- Federal Office Automation Center
FOB	- Free On Board
FOC	- Free Of Charge
FOIA	- Freedom Of Information Act
FOIMS	- Field Office Information Management System
FOOBAR	- See FUBAR
FOR	- Free On Rail
FORCS	- Faa's Operational Reporting Communication System
FORD	- Fix Or Repair Daily
FORD	- Found On Road Dead
FORTRAN	- FORmula TRANslator
FOSE	- Federal Office Systems Exposition
FOT	- Free On Truck
FOV	- Field Of View
FPA	- Floating Point Accelerator
FPC	- Fish Protein Concentrate
FPE	- Floating Point Engine
FPHA	- Federal Public Housing Authority
FPLA	- Field Programmable Logic Array (see PLA)
FPM	- Feet Per Minute
FPO	- Field Post Office
FPO	- Fleet Post Office
FPS	- Feet Per Second
FRACTAL	- FRACTional dimensionAL
FRED	- Fred Resembles Emacs Deliberately
FRG	- Federal Republic of Germany (West Germany)
FROG	- Free Rocket Over Ground
FRPG	- Fantasy Role Playing Game
FRS	- Federal Reserve System
FSF	- Free Software Foundation
FSK	- Frequency Shift Keying
FSLIC	- Federal Savings and Loan Insurance Corporation
FSS	- Federal Supply Service
FSW	- Forward Swept Wings
FT	- Foot
FTAM	- File Transfer And Management
FTC	- Federal Trade Commission
FTL	- Faster Than Light
FTP	- File Transfer Protocol
FTS	- Federal Telephone System
FUBAR	- F***ed Up Beyond All Recognition
FW	- Fringeworthy
FWD	- Front Wheel Drive
FWHM	- Full Width at Half Maximum
FX	- Foreign eXchange
FY	- Fiscal Year
FYI	- For Your Information
GA	- Gamblers Anonymous
GA	- General Assembly
GA	- General Average
GA	- General of the Army
GA	- Georgia
GAAP	- Generally Accepted Accounting Principles
GAN	- Global Area Network
GAR	- Grand Army of the Republic
GATT	- General Agreement on Tariffs and Trade
GAW	- Guaranteed Annual Wage
GB	- Gangbusters
GB	- GigaByte
GB	- Great Britain
GBIP	- General Purpose Interface Bus
GC	- Garbage Collection (LISP)
GC	- Gas Chromatograph (or Chromatography)
GCA	- Ground Controlled Approach
GCC	- Gnu C Compiler
GCD	- Ground Controlled Descent
GCL	- Graphics Command Language
GCM	- General Court Martial
GCR	- Group-Coded Recording (magnetic tape, 6250 bpi)
GCT	- Greenwich Civil Time
GDB	- Gnu DeBugger
GE	- General Electric
GEM	- Graphics Environment Manager
GHQ	- General HeadQuarters
GHz	- Giga HertZ (unit of frequency, 1,000,000,000 cycles per second)
GI	- Galvanized Iron
GI	- Gastro Intestinal (as in upper GI)
GI	- General Issue
GI	- Government Issue
GIF	- Graphics Interchange Format
GIGO	- Garbage In Garbage Out
GIN	- Graphics INput
GISS	- Goddard Institute for Space Studies
GKS	- Graphical Kernel Standard
GM	- Game Master
GM	- General Manager
GM	- General Motors
GM	- Guided Missile
GMBH	- Gesellschaft Mit Beschraenkter Haftung
GMT	- Greenwich Mean Time
GNP	- Gross National Product
GNU	- GNU's Not Unix
GOES	- Geostationary Orbiting Environmental Satellites
GOSIP	- Government OSI Profile
GP	- General Practitioner
GPI	- Graphics Programming Interface
GPIB	- General-Purpose Interface Bus
GPO	- General Post Office
GPO	- Government Printing Office
GPS	- Global Positioning System
GQ	- General Quarters
GRB	- Gamma Ray Burst(er)
GREP	- Global Regular Expression Print, g/re/p, (UNIX command)
GRO	- Gamma Ray Observatory
GS	- General Schedule
GS	- Glide Slope
GSA	- General Services Administration
GSA	- Girl Scouts of America
GSBCA	- General Services administration Board of Contract Appeals
GSFC	- Goddard Space Flight Center
GSTS	- Ground-based Surveillance and Tracking System
GT	- Gross Ton
GTE	- General Telephone and Electric
GTSI	- Government Technology Services, inc.
GUI	- Graphical User Interface
GW	- Gamma World
GWEN	- Ground Wave Emergency Network
H	- Harn
H	- Height
HACD	- Home Area Customer Dialing
HAL	- Heuristically programmed ALgorithmic computer (2001)
HAM	- Hold And Modify
HBM	- Her British Majesty; His British Majesty
HBO	- Home Box Office
HC	- Holy Communion
HC	- House of Commons
HCFA	- Health Care Financing Administration
HCL	- High Cost of Living
HD	- Hard Disk
HD	- Heavy Duty
HDA	- Head Disk Assembly (in winchester disk drives)
HDBV	- Host Data Base View
HDL	- High Density Lipoprotein
HDLC	- High-level Data Link Control (IBM network stuff)
HDTV	- High Definition Television
HE	- His Eminence; His Excellency
HEAO	- High Energy Astronomical Observatory
HEMP	- Help End Marijuana Prohibition
HERO	- Hazards of Electromagnetic Radiation to Ordnance
HF	- High Fantasy
HF	- High Frequency (3-30MHz)
HFE	- Human Factors Engineering
HFS	- Hierarchical File System
HI	- Hawaii
HIIPS	- Hud Integrated Information Processing Services
HLL	- High-Level Language
HMOS	- High performance Metal Oxide Semiconductor (see MOS)
HMS	- His/Her Majesty's Ship
HMT	- His/Her Majesty's Transport
HNPA	- Home Numbering Plan Area
HOBIS	- HOtel Billing Information System 
HOL	- High-Order System
HP	- Hewlett Packard, inc.
HP	- High Pressure
HP	- Higher Power (sort of an AA "in" term, usually God)
HP	- Hit Points
HP	- HorsePower
HPGe	- High Purity Germanium
HPL/T	- High-Productivity Languages/Tools
HQ	- HeadQuarters
HR	- House of Representatives
HRH	- Her Royal Highness
HRH	- His Royal Highness
HS	- High School
HSB	- Hue, Saturation, Brightness
HST	- Hawaiian Standard Time
HT	- High Tension (as in electric power transmission)
HTK	- Hits To Kill
HUAC	- House Unamerican Activities Committee
HUD	- Heads Up Display
HUD	- Housing and Urban Development
HVAC	- Heating, Ventilation, and Air Conditioning
HW2000	- Highway 2000
HWM	- High-Water Mark
Hb	- HemogloBin
Hz	- HertZ (unit of frequency, cycles per second)
I/O	- Input/Output
IAEA	- International Atomic Energy Agency
IATA	- International Air Transport Association
IBM	- International Business Machines, inc.
IC	- Integrated Circuit
ICB	- Interstate Computer Bank
ICBM	- InterContinental Ballistic Missile
ICE	- In-Circuit Emulator
ICI	- Imperial Chemical Industries
ICJ	- International Court of Justice
ICL	- International Computers Ltd.
ICP	- Integrated Channel Processor
ICP	- Inventory Control Points
ICRC	- International Cosmic Ray Conference
ID	- IDentification
ID	- Idaho
IDA	- Intercommunication Data Areas
IDA	- International Development Association
IDDD	- International Direct Distance Dialing 
IDE	- Interactive Development Environments, inc
IDF	- Intermediate Distributing Frame
IE	- Indo-European
IEE	- Institute of Electrical Engineers (UK)
IEEE	- Institute of Electrical and Electronics Engineers
IF	- Intermediate Frequency (as in IF stage)
IFB	- Invitation For Bids
IFC	- International Finance Corporation
IFC	- International Freighting Corporation
IFF	- Identification - Friend or Foe
IFF	- Interchange File Format
IFLA	- International Federation of Library Associations
IGES	- Initial Graphics Exchange Standard
IGY	- International Geophysical Year
IHP	- Indicated HorsePower
IHS	- Integrated Hospital Support
IIA	- Information Industry Association
IIE	- Institute of Industrial Engineers
IIHF	- International Ice Hockey Federation
IIL	- Integrated Injection Logic
ILO	- International Labor Organization
ILS	- Instrument Landing System
IMF	- International Monetary Fund
IMHO	- In My Humble Opinion
IMP	- Interface Message Processor (ARPAnet)
IMSL	- International Mathematical Subroutine Library
IN	- Indiana
INADS	- INitialization and ADministration System 
INRA	- Iesus Nazerenus Rex Iudaeorum (Jesus of Nazareth, King of the Jews)
INRIA	- Institut National de Recherche en Informatique et Automatique
INS	- Immigration and Naturalization Service
INSTITUTE	- INSTITUTE's Name Shows That It's Totally Unrelated To EMACS
INTAP	- INteroperability Technology Association for information Processing
INWATS	- INward Wide Area Telephone Service
IO	- Input/Output (sometimes I/O)
IOD	- Identified Outward Dialing
IOOF	- International Order of Odd Fellows
IOU	- I Owe you (U)
IP	- Innings Pitched
IP	- Intermediate Point
IPC	- Inter-Process Communication
IPE	- Integrated Programming Environment
IPMS	- InterPersonal Message Services
IPS	- Information Processing Standards
IPSE	- Integrated Project-Support Environment
IQ	- Intelligence Quotient (see EQ)
IR	- Index Register
IRA	- Individual Retirement Account
IRA	- Irish Republican Army
IRAS	- Infrared Astronomical Satellite
IRBM	- Intermediate Range Ballistic Missile
IRDS	- Information Resource Dictionary Standard
IRDS	- InfraRed Detection Set
IRE	- Institute of Radio Engineers (old name for the now IEEE, which see)
IRM	- Information Resources Management
IRMS	- Information Resources Management Service
IRS	- Internal Revenue Service
IS	- Information Systems
IS	- International Standard
ISA	- Industry-Standard Architecture
ISAM	- Indexed Sequential Access Method
ISBD	- International Bibliographic Description
ISC	- Information Services Center
ISC	- International Switching Center
ISCH	- Interstitial-Cell-Stimulating Hormone (same as LH)
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
ISO	- International Standards Organization
ISOO	- Information Security Oversight Office
ISPM	- International Solar Polar Mission
ISR	- Institute of Snow Research
ISRG	- Independent Space Research Group
ISV	- Independent Software Vendor
IT	- Industrial Technology
IT	- Information Technology
ITC	- Inter-Task Communication
ITS	- Incompatible Timesharing System
ITT	- International Telephone and Telegraph
ITU	- International Telecommunications Union
ITUSA	- IT Users Standards Association
IUS	- Inertial Upper Stage
JACM	- Journal of the Association for Computing Machinery
JBS	- John Birch Society
JC	- Jesus Christ
JC	- Joint Compound (plumbing)
JC	- Julius Caesar
JC	- Junior College
JCA	- Jewelry Crafts Association
JCAC	- Joint Civil Affairs Committee
JCAE	- Joint Committee on Atomic Energy
JCEE	- Joint Council on Economic Education
JCET	- Joint Council on Educational Television
JCS	- Joint Chiefs of Staff
JD	- Justice Department
JDS	- John Dewey Society
JES	- John Ericsson Society
JFK	- John F. Kennedy (international airport)
JFMIP	- Joint Financial Management Improvement Program
JGR	- Journal of Geophysical Research
JI	- Justice, Inc.
JIC	- Joint Intelligence Center
JIC	- Just in Case
JIM	- Job Information Memorandum
JINTACCS	- Joint INteroperability of TActical Command and Control Systems
JIS	- Japan Industrial Standards
JISC	- Japanese Industrial Standards Committee
JIT	- Just In Time
JMS	- John Milton Society
JO	- Job Order
JO	- Junior Officer
JOVE	- Jonathan's Own Version of Emacs
JOVIAL	- Jules Own Version of the International Algorithmic Language
JPL	- Jet Propulsion Laboratory
JRC	- Junior Red Cross
JSC	- Johnson Space Center
JSD	- Jackson System Development
JSRC	- Joint Services Review Committee
JTIDS	- Joint Tactical Information Distribution Systems
JV	- Junior Varsity
K&R	- Kernighan and Ritchie, the c programming language
K9	- canine (K9 corps - army dogs)
KB	- KiloByte
KC	- King's Counsel (QC when queen reigning)
KC	- Knights of Columbus
KD	- Kiln Dried
KD	- Knocked Down
KDCI	- Key Display Call Indicator
KERMIT	- Kl-10 Error-free Reciprocal Micro Interconnect over Tty lines
KHz	- Kilo HertZ (unit of frequency, 1000 cycles per second)
KI	- Kiwanis International
KIA	- Killed In Action
KIAS	- Knot Indicated Air Speed
KO	- Knock Out
KP	- Key Pulse
KP	- Kitchen Police
KPNO	- Kitt Peak National Observatory
KPO	- KeyPunch Operator
KQC	- King's College London
KS	- King's Scholar
KSC	- Kennedy Space Center
KSU	- Key Service Unit
KTS	- Key Telephone System
KTU	- Key Telephone Unit
KWIC	- Key Word In Context
KY	- Kentucky
LA	- Los Angeles
LA	- Louisiana
LA	- Low Altitude
LADAR	- LAser Detection And Ranging
LAM	- Master of Liberal Arts
LAMA	- Local Automatic Message Accounting
LAN	- Local Apparent Noon
LAN	- Local Area Network
LAR	- Local Acquisition Radar
LASER	- Light Amplification by Stimulated Emission of Radiation
LAT	- Local Apparent Time
LATA	- Local Access Transport Area
LAX	- Los Angeles International Airport
LB	- Light Bomber
LB	- pound (LiBra)
LBHS	- Long Beach High School
LBL	- Lawrence Berkeley Labs
LC	- inductor-Capacitor circuit (as in filters, L is symbol inductance)
LCD	- Liquid Crystal Display
LCD	- Lowest Common Denominator
LCDR	- Lieutenant Commander
LCM	- Life Cycle Management
LCT	- Landing Craft Tanks
LDEF	- Long Duration Exposure Facility
LDL	- Low Density Lipoprotein
LDX	- Long Distance eXtender
LEAP	- Low-power Enhanced At Portable
LED	- Light Emitting Diode
LEM	- Lunar Excursion Module
LF	- Low Frequency (30-300KHz)
LH	- Left Hand
LH	- Lower Half
LH	- Luteinizing Hormone (same as ISCH)
LHD	- Litterarum Humaniorum Doctor (doctor of human letters)
LHS	- Left Hand Side
LI	- Long Island
LIFIA	- Laboratoire d'Informatique Fondamentale et d'Intelligence Artificielle
LIFO	- Last In First Out (see FIFO)
LINC	- Laboratory INstrument Computer
LISP	- LISt Processing Language
LIU	- Line Interface Unit
LL	- Late Latin
LL	- Long Lines
LLAMA	- Logic Lacking A Meaningful Acronym
LLB	- Legum Baccalaureus (bachelor of laws)
LLD	- Legum doctor (doctor of laws)
LLN	- Line Link Network
LLNL	- Lawrence Livermore National Laboratories
LLP	- Line Link Pulsing
LM	- Life Master (Contract Bridge ranking)
LM	- Lunar Module
LMC	- Large Magellanic Cloud (see SMC)
LMOS	- Line Maintenance Operations System
LNG	- Liquified Natural Gas
LOA	- Lands of Adventure
LOOPS	- Lisp Object Oriented Programming System
LOP	- Lines Of Position
LOTS	- Low Overhead Timesharing System
LP	- Long Playing record
LP	- Low Pressure
LPC	- Linear Predictive Coding (speech processing)
LPDA	- Link Problem Determination Aid
LPF	- League for Programming Freedom
LPG	- Liquified Petroleum Gas
LPG	- Low Pressure Gas
LPN	- Licensed Practical Nurse
LPP	- Licensed Program Products
LPR	- Line PrinteR
LRBM	- Long Range Ballistic Missile
LRC	- Longitudinal Redundancy Character
LRU	- Line Replaceable Unit
LS	- Left Side
LS	- Letter Signed
LS	- Locus Sigilli (place of seal)
LSB	- Least Significant Bit; Least Significant Byte
LSC	- LightSpeed C
LSD	- Least Significant Digit
LSD	- LySergic acid Diethylamide
LSD	- pounds (Libra), shillings (Sestertii), and (old) pence (Denarii)
LSI	- Large Scale Integration
LSP	- LightSpeed Pascal
LSS	- Life Support System
LSS	- Loop Switching System
LSSD	- Level-Sensitive Scan Detection
LT	- Long Ton
LT	- Low Tension
LTC	- Lieutenant Colonel
LTJG	- Lieutenant Junior Grade
LTL	- Less than Truckload Lot
LUG	- Local Users Group
LUT	- Look-Up Table
LWM	- Low-Water Mark
LZ	- Landing Zone
M	- Miniatures
MA	- Massachusetts
MAAP	- Maintenance And Administration Panel
MAC	- Military Air Command
MACSYMA	- project MAC's SYmbolic MAnipulation System
MAD	- Mutual Assured Destruction
MADD	- Mothers Against Drunk Driving
MAG	- Magazine
MAN	- Metropolitan Area Network
MAP	- Manufacturing Automation Protocol
MARBI	- MAchine Readable form of Bibliographic Information
MARC	- MAchine Readable card Catalog
MARS	- Multiuser Archival and Retrieval System
MASC	- Multiple Award Schedule Contract
MASER	- Microwave Amplification by Stimulated Emission of Radiation
MASH	- Mobile Army Surgical Hospital
MAST	- Multi-Application SOnar Trainer
MAT-CALS	- Marine Air Traffic-Control And Landing System
MAU	- Math Acceleration Unit
MB	- MegaByte
MBA	- Master Business Administration
MC	- Master of Ceremonies
MCA	- Micro Channel Architecture
MCAE	- Mechanical Computer Aided Engineering
MCC	- Master Control Console
MCC	- Microelectronics and Computer technology Corporation
MCP	- Master Control Program
MCP/AS	- Master Control Program/Advanced System
MCPO	- Master Chief Petty Officer
MD	- Maryland
MD	- Medical Doctor
MD	- Months after Date
MDAS	- Magnetic Drum Auxiliary Sender
MDE	- Modular Design Environment
MDF	- Main Distribution Frame
MDT	- Mean Down Time
ME	- Maine
ME	- Mechanical Engineer
MERP	- Middle-Earth Role Playing
MEd	- Master of EDucation
MF	- Medium Frequency (300-3000KHz)
MF	- Middle French
MF	- Multi-Frequency
MFA	- Master Fine Arts
MFLOPS	- Million FLoating-point OPerations per Second
MFM	- Modified Frequency Modulation
MFS	- Macintosh File System
MG	- Machine Gun
MG	- Major General
MG	- Military Government
MGH	- Massachusetts General Hospital
MGM	- Metro-Goldwyn Mayer
MHD	- MagnetoHydroDynamics
MHz	- Mega HertZ (unit of frequency, 1,000,000 cycles per second)
MI	- Michigan
MI	- Military Intelligence
MIA	- Missing In Action
MIDI	- Musical Instrument Digital Interface
MIFASS	- Marine Integrated Fire And Support System
MILNET	- MILitary NETwork
MIM	- Morality In Media
MIMD	- Multiple Instruction, Multiple Data
MINCE	- MINCE Is Not Complete Emacs
MIPS	- Million Instructions Per Second
MIRV	- Multiple Independently-Targetable Reentry Vehicle
MIS	- Management Information Systems
MIT	- Massachusetts Institute of Technology
ML	- Middle Latin
MLA	- Member of Legislative Assembly (see MPP)
MLD	- Minimum Lethal Dose
MLS	- Microwave Landing System
MLS	- Multi-Level Security
MM	- Maryknoll Missioners
MMES	- Martin Marietta Energy Systems
MMFS	- Manufacturing Message Format Standard
MMM	- see 3M
MMU	- Memory Management Unit
MN	- Minnesota
MNA	- Member of National Assembly (Quebec)
MNP	- Microcom Networking Protocol
MO	- Mail Order
MO	- Medical Officer
MO	- Missouri
MO	- Modus Operandi
MO	- Money Order
MOR	- Middle-Of-the-Road
MOS	- Metal Oxide Semiconductor
MOSFET	- Metal Oxide Semiconductor Field Effect Transistor
MOTIS	- Message-Oriented Text Interchange System
MOU	- Memorandum Of Understanding
MOUSE	- Minimum Orbital Unmanned Satellite of Earth
MP	- Melting Point
MP	- Member of Parliament
MP	- Metropolitan Police
MP	- Military Police(man)
MPG	- Miles Per Gallon
MPH	- Miles Per Hour
MPP	- Member of Provincial Parliament (Canada; also MLA)
MPW	- Macintosh Programmer's Workshop
MR	- Miniatures Rules
MRP	- Manufacturing Requirements Planning
MS	- ManuScript
MS	- Master of Science
MS	- Military Science
MS	- Motor Ship
MS	- Multiple Sclerosis
MS-DOS	- MicroSoft DOS
MSB	- Most Significant Bit; Most Significant Byte
MSC	- MicroSoft C
MSCP	- Mass Storage Control Protocol
MSD	- Most Significant Digit
MSE	- Mobile Subscriber Equipment
MSG	- MonoSodium Glutamate
MSH	- Marvel Super Heroes
MSL	- Mean Sea Level
MSPE	- Mercenaries, Spies & Private Eyes
MSS	- Management Support System
MSS	- ManuScriptS
MSS	- Mass Storage System
MST	- Mountain Standard Time
MT	- Metric Ton
MT	- Mountain Time
MTA	- Message Transfer Agent
MTA	- Metropolitan Transportation Authority
MTBF	- Mean Time Between Failures
MTR	- Magnetic Tape Recording
MTSO	- Mobile Telephone Switching Office
MTTF	- Mean Time To Failure
MTV	- Music TeleVision
MUF	- Maximum Usable Frequency (max freq during sunspot activity)
MULTICS	- MULTiplex Information Computer Services
MUMPS	- Mgh Utility MultiProgram System
MUNG	- Mung Until No Good (see the hacker's dictionary)
MUX	- MUltipleXor
MVA	- MegaVolt Ampere
MX	- Missile eXperimental
MeV	- Million Electron Volts
N	- North
N	- Notice
NA	- Narcotics Anonymous
NA	- North America
NA	- Not Applicable
NAACP	- National Association for the Advancement of Colored People
NAAS	- North American Automated Systems co.
NAB	- National Association of Broadcasters
NABISCO	- NAtional BIScuit COmpany
NACS	- National Advisory Committee on Semiconductors
NAD	- Network Access Device
NADGE	- NATO Air Defense Ground Environment
NAG	- Numerical Algorithms Group
NAGE	- National Association of Government Employees
NAK	- Negative AcKnowledge
NAPAP	- National Acid Precipitation Assessment Program
NAR	- Nuclear Acoustic Resonance
NARDAC	- NAvy Regional Data Automation Center
NAS	- National Academy of Sciences
NAS	- National Advanced Systems
NASA	- National Aeronautics and Space Administration
NASA/GSFC	- NASA Goddard Space Flight Center
NATO	- North Atlantic Treaty Organization
NAVDAC	- NAVal Data Automation Command
NAVSWC	- NAV Surface Weapons Center
NB	- New Brunswick
NB	- Nota Bene
NBA	- National Basketball Association
NBC	- National Broadcasting Company
NBFM	- NarrowBand Frequency Modulation
NBO	- Network Build Out
NBS	- National Bureau of Standards
NBVM	- Narrow Band Voice Modulation
NC	- No Charge
NC	- North Carolina
NCA	- Network Control Analysis
NCC	- National Computer Conference
NCDC	- National Climatic Data Center
NCE	- New Catholic Edition
NCGA	- National Computer Graphics Association
NCIC	- National Cartographic Information Center
NCO	- Non-Commissioned Officer
NCP	- Network Control Program
NCR	- National Cash Register
NCS	- Network Computing System
NCSA	- National Center for Supercomputing Applications
NCSC	- National Computer Security Center
NCTL	- National Computer and Telecommunications Laboratory
NCV	- No Commercial Value
ND	- No Date
ND	- North Dakota
NDA	- Non-Disclosure Agreement
NDDL	- Neutral Data Definition Language
NDE	- News Development Environment
NDEA	- National Defense Education Act
NDL	- Network Database Language
NDP	- New Democratic Party (Canada)
NDSL	- National Direct Student Loan
NDT	- Newfoundland Daylight Time
NE	- New England
NE	- North East
NEAR	- National Electronic Accounting and Reporting system
NEB	- New English Bible
NEC	- Nippon Electric Company
NEI	- Not Elsewhere Included
NES	- National Energy Strategy
NES	- Not Elsewhere Specified
NESC	- National Energy Software Center
NET	- NETwork
NET	- National Educational Television
NEWS	- Network extensible Window System
NEXRAD	- NEXt generation weather RADar
NF	- No Funds
NFC	- National Football Conference
NFFE	- National Federation of Federal Employees
NFL	- National Football League
NFS	- Network File System
NG	- National Guard
NG	- No Good
NH	- New Hampshire
NHI	- National Health Insurance
NHL	- National Hockey League (the "nation" is Canada, BTW)
NIC	- Network Information Center (ARPAnet)
NIH	- National Institutes of Health
NIH	- Not Invented Here
NIM	- Nuclear Instrumentation Module (an electronic instr. standard)
NIMH	- National Institute of Mental Health
NIS	- Network Information System (formerly yp)
NISO	- National Information Standards Organization
NIST	- National Institute of Standards and Technology (formerly NBS)
NJ	- New Jersey
NL	- National League (baseball)
NLM	- National Library of Medicine
NLP	- Natural Language Processing
NLRB	- National Labor Relations Board
NLS	- Network License Server
NM	- Nautical Mile
NM	- New Mexico
NM	- Night Message
NM	- No Mark; Not Marked
NMOS	- N channel Metal Oxide Semiconductor (N-MOS) (see MOS)
NMR	- Nuclear Magnetic Resonance
NNE	- North North East
NNTP	- Net News Transfer Protocol
NNW	- North North West
NOA	- NSWC Office Automation
NOAA	- National Oceanic and Atmospheric Administration
NORAD	- NORth American Defense Command
NORML	- National Organization for the Reform of Marijuana Laws
NOS	- Not Otherwise Specified
NOSC	- Naval Ocean Systems Center
NOTIS	- Network Operator Trouble Information System
NP	- No Protest
NP	- Nondeterministic-Polynomial
NP	- Notary Public
NP	- Noun Phrase
NPA	- Number Plan Area
NPC	- Non-Player Character (see PC)
NPL	- Non-Procedural Language
NPN	- Negative-Positive-Negative (transistor)
NPN	- NonProtein Nitrogen
NPR	- National Public Radio
NQS	- Network Queuing System
NRA	- National Rifle Association
NRC	- National Research Council
NRC	- Nuclear Regulatory Commission
NRE	- Non-Recurring Engineering (as in NRE costs)
NRL	- Naval Research Labs
NRO	- National Reconnaissance Office
NRZ	- Non-Return to Zero
NRZI	- Non-Return to Zero Indicates
NRZI	- Non-Return to Zero Inverted (magnetic tape, 800 bpi)
NS	- Not Specified
NS	- Nova Scotia
NS	- Nuclear Ship
NSA	- National Security Agency
NSC	- National Security Council
NSE	- Network Software Environment
NSF	- National Science Foundation
NST	- Newfoundland Standard Time
NSW	- New South Wales
NSWC	- Naval Surface Warfare Center
NSWC	- Naval Surface Weapons Center
NT	- New Testament
NT	- Newfoundland Time
NT	- Northern Territory
NTEU	- National Treasury Employees Union
NTIS	- National Technical Information Service
NTN	- Neutralized Twisted Nematic
NTP	- Normal Temperature and Pressure (see STP)
NTSB	- National Transportation Safety Board
NTSC	- National Television Standards Committee
NTSC	- Never The Same Color
NTT	- Nippon Telephone & Telegraph
NU	- Name Unknown
NURBS	- NonUniform Rational B-Spline
NUSC	- Naval Underwater Systems Command
NV	- Nevada
NW	- North West
NWS	- National Weather Service
NWT	- North West Territories
NY	- New York
NYC	- New York City
NYSE	- New York Stock Exchange
NZ	- New Zealand
NZUSUGI	- New Zealand Unix System User Group, Inc.
OA	- Office Automation
OA	- Overeaters Anonymous
OAS	- Organization of American States
OATS	- Office Automation Technology and Services
OBE	- Order of the British Empire
OBS	- Omni Bearing Selector
OC	- Order of Canada
OCDM	- Office of Civil Defense and Mobilization
OCI	- Out of City Indicator
OCLC	- Online Computer Library Center (Ohio College Library Catalog)
OCO	- Object Code Only
OCR	- Optical Character Recognition
OCS	- Officer Candidate School
OD	- Doctor of Optometry
OD	- Oculus Dexter (right eye)
OD	- Officer of the Day
OD	- OverDose
ODI	- Optical Digital Image
ODISS	- Optical Digital Image Storage System
OE	- Old English
OED	- Oxford English Dictionary
OEM	- Original Equipment Manufacturer
OEO	- Office of Economic Opportunity
OES	- Order of the Eastern Star
OF	- Old French
OFM	- Order of Friars Minor
OFS	- Order of Free State
OG	- Original Gum
OH	- Ohio
OIRA	- Office of Information and Regulatory Affairs
OIU	- Office Interface Unit
OJT	- On the Job Training
OLTP	- On-Line Transaction Processing
OMB	- Office of Management and Budget
OMD	- Orchestral Manouevers in the Dark
OMV	- Orbital Maneuvering Vehicle
ON	- Old Norse
ONC	- Open Network Computing
ONI	- Office of Naval Intelligence
ONI	- Operator Number Identification
ONR	- Office of Naval Research
OOP	- Object Oriented Programming
OOPART	- Out Of Place ARTifact
OOPS	- Object-Oriented Programming System
OP	- OFFICEPOWER office automation system, trademark of CCI
OP	- Observation Post
OP	- Order of Preachers
OP	- Out of Print
OPEC	- Organization of Petroleum Exporting Countries
OPM	- Office of Personnel Management
OR	- Operating Room
OR	- Oregon
OR	- Owner's Risk, Own Risk
ORNL	- Oak Ridge National Laboratory
OROM	- Optical Read Only Memory
OS	- Oculus Sinister (left eye)
OS	- Operating System
OS	- Ordinary Seaman
OS	- Out of Stock
OSB	- Order of St. Benedict
OSCAR	- Orbiting Satellite Carry Amateur Radio (1st launched 12 Dec 1961)
OSCRL	- Operating System Command Response Language
OSD	- Office of the Secretary of Defense
OSDIT	- Office of Software Development and Information Technology
OSF	- Open Software Foundation
OSF	- Order of St. Francis
OSI	- Open Systems Interconnection
OSI/RM	- Open Systems Interconnection/Reference Model
OSME	- Open Systems Message Exchange
OSP	- Optical Storage Processor
OSS	- Office Support System
OSS	- Office of Strategic Services (later CIA)
OSS	- Operation Support System
OSTP	- Office of Science and Technology Policy
OT	- Old Testament
OT	- OverTime
OT&LF	- Open Taxi & Limousine Foundation
OTA	- Office of Technical Assistance
OTA	- Office of Technology Assessment
OTB	- Off-Track Betting
OTC	- Over The Counter (stocks)
OTF	- Open Token Foundation
OTH-B	- Over The Horizon - Backscatter (as in radar)
OTR	- On The Rag
OTS	- Officers' Training School
OUTWATS	- OUTward Wide Area Telephone Service
PA	- Pennsylvania
PA	- Per Annum
PA	- Play Aid
PA	- Power of Attorney
PA	- Press Agent
PA	- Private Account
PA	- Public Address
PA	- Purchasing Agent
PABX	- Private Automatic Branch eXchange
PAD	- Packet Assembler-Disassembler (for networking)
PAL	- Phase Alternation Line-rate
PAL	- Programmable Array Logic
PAM	- Pulse Amplification Modulation
PARC	- Palo Alto Research Center, xerox
PATROL	- Program for Administrative Traffic Reports On Line
PBM	- Play By Mail game
PBS	- Public Broadcasting System
PBX	- Private Branch eXchange (mini-telephone network system)
PC	- Peace Corps
PC	- PerCent; PerCentage
PC	- Personal Computer
PC	- Player Character (see NPC)
PC	- Post Card
PC	- Post Cibum (after meals)
PC	- Privileged Character
PC	- Privy Council
PC	- Program Counter
PC	- Progressive Conservative party (Canada)
PC-DOS	- Personal Computer DOS
PC/AT	- Personal Computer/Advanced Technology
PCB	- PolyChlorinated Biphenyls
PCB	- Printed Circuit Board
PCI	- Panel Call Indicator
PCIE	- President's Council on Integrity and Efficiency
PCL	- Printer Command Language
PCM	- Plug-Compatible Mainframe
PCM	- Pulse Code Modulation
PCPC	- Personal Computers Peripheral Corporation
PCS	- Permanent Change of Station
PCTE	- Portable Common Tools Environment
PCTS	- Posix Conformance Test Suite
PD	- Per Diem
PD	- Police Department
PD	- Potential Difference
PD	- Public Domain
PDAD	- Proposed Draft ADdendum
PDE	- Partial Differential Equation
PDES	- Product Data Exchange Specifications
PDF	- Program Development Facility
PDL	- Page Description Language
PDL	- Program Design Language
PDP	- Plasma Display Panel
PDP	- Programmed Data Processor
PDQ	- Pretty Damned Quick
PDT	- Pacific Daylight Time
PE	- Phase Encoded
PE	- Physical Education
PE	- Prince Edward island
PE	- Printer's Error
PE	- Professional Engineer
PE	- Protestant Episcopal
PEI	- Prince Edward Island
PEP	- Productivity Enhancement Project
PEPE	- Pepe Est Presque Emacs
PERL	- Pathologically Eclectic Rubbish Lister
PERL	- Practical Extraction and Report Language
PEX	- Phigs/phigs+ Extension to X
PGA	- Professional Graphics Adapter
PGA	- Pure Grain Alcohol
PHA	- Pulse Height Analyzer (or Analysis)
PHIGS	- Programmers Hierarchical Interactive Graphics System
PHS	- Public Health Service
PIF	- Paid In Full
PIT	- Principal, Interest, and Taxes
PIXEL	- PIcture ELement
PLA	- Programmable Logic Array
PLC	- Programmable Logic Controller
PLCC	- Plastic Leaded Chip Carrier
PLL	- Phase-Locked Loop
PLM	- Programming Language for Microcomputers
PLO	- Please Leave On
PM	- PayMaster
PM	- Police Magistrate
PM	- Post Meridiem
PM	- PostMaster
PM	- PostMortem
PM	- Preventive Maintenance
PM	- Prime Minister
PM	- Provost Marshal
PM/X	- Presentation Manager for X windows
PMO	- Prime Minister's Office
PMOS	- P channel Metal Oxide Semiconductor (P-MOS) (see MOS)
PMT	- PhotoMultiplier Tube
PN	- Promissory Note
PNP	- Positive-Negative-Positive (transistor)
PO	- PettyOfficer
PO	- Post Office
PO	- Postal Order
PO	- Purchase Order
POC	- Port Of Call
POD	- Pay On Delivery
POE	- Port Of Embarkation
POE	- Port Of Entry
POGO	- Polar Orbiting Geophysical Observatory
POM	- Phase Of Moon
POPS	- Paperless Order Processing System
POR	- Price On Request
POS	- Point Of Sale
POSI	- Promoting conference for OSI
POSIX	- Portable Operating System for unIX
POV	- Point Of View
POW	- Prisoner Of War
PP	- Parcel Post
PP	- Past Participle
PP	- Primary Point (or dial Post Pay payphone) 
PPB	- Parts Per Billion
PPC	- Pour Prendre Conge' (to take leave)
PPCS	- Person to Person, Collect, Special
PPM	- Parts Per Million
PPN	- Parameterized Post-Newtonian formalism for general relativity
PPN	- Project Programmer Number 
PPS	- PostPostScriptum
PPT	- Pulse Pair Timing
PQ	- Province of Quebec
PR	- PayRoll
PR	- Public Relations
PR	- Puerto Rico
PRC	- Planning Research Corporation
PROFS	- PRofessional OFfice System
PROM	- Programmable Read Only Memory
PS	- PicoSecond
PS	- PostScript
PS	- PostScriptum
PS	- Power Steering
PS	- Power Supply
PS	- Public School
PSA	- Problem Statement Analyzer
PSC	- Polar Stratospheric Clouds
PSDS	- Public Switched Digital Service
PSE	- Programming Support Environment
PSG	- Platoon SerGeant
PSK	- Phase Shift Keying
PSL	- Problem Statement Language
PSR	- "Product Specific Realizations
PST	- Pacific Standard Time
PSTN	- Public Switched Telephone Network
PT	- Pacific Time
PT	- Patrol Torpedo (as in PT boat)
PT	- Physical Therapy
PT	- Physical Training
PTA	- Parent-Teacher Association
PTD	- Parallel Transfer Disk
PTO	- Patent and Trademark Office
PTO	- Please Turn Over
PTO	- Power Take-Off
PVO	- Pioneer Venus Orbiter
PW	- Prisoner of War (usually POW)
PWG	- Permanent Working Group
PX	- Post eXchange (see BX)
PhysRev	- Physical Review Journal   - Phys Rev
QAM	- Quadrature Amplitude Modulation
QC	- Quality Control
QC	- Queen's Counsel
QD	- Quaque Die (daily)
QDA	- Quantity Discount Agreement
QED	- 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 Transistor
QIC	- Quarter-Inch Cartridge
QID	- Quater In Die (four times a day)
QLI	- Query Language Interpreter
QM	- QuarterMaster
QMC	- QuarterMaster Corps
QMF	- Query Management Facility
QMG	- QuarterMaster General
QMS	- Quality Micro Systems
QNS	- Quantity Not Sufficient
QWERTY	- first six keys from left on top alphabetic row of standard keyboard
R	- Rolemaster
R&B	- Rhythm and Blues (commonly R and B)
R&D	- Research and Development (commonly R and D)
RA	- Regular Army
RA	- Research Assistant
RA	- Royal Academy
RAAF	- Royal Australian Air Force
RACE	- Random Access Card Equipment
RACEP	- Random Access and Correlation for Extended Performance 
RAD	- Radiation Absorbed Dose
RAD	- Rapid Access Disk
RADAR	- RAdio Detection And Ranging
RADM	- Rear ADMiral
RAF	- Royal Air Force
RAM	- Random Access Memory
RARDE	- Royal Armaments Research and Development Establishment
RAS	- Reliability, Availability, and Serviceability
RASC	- Residence Account Service Center
RBC	- Red Blood Count
RBI	- Runs Batted In
RBOC	- Regional Bell Operating Company
RC	- Red Cross
RC	- Regional Center
RC	- Resistor-Capacitor circuit (as in filters)
RC	- Roman Catholic
RCA	- Radio Corporation of America
RCAF	- Royal Canadian Air Force
RCAS	- Reserve Component Automation System
RCC	- Radio Common Carrier
RCMP	- Royal Canadian Mounted Police
RD	- Rural Delivery
RDA	- Remote Data Access
RDBMS	- Relational DataBase Management System
RDF	- Radio Direction Finding
REA	- Rail Express Agency
REM	- Rapid Eye Movement
REO	- R. E. Olds
REO	- Removable, Erasable, Optical
REXX	- Restructured EXtended eXecutor
RF	- Radio Frequency
RFC	- Request For Comments
RFD	- Rural Free Delivery
RFI	- Radio Frequency Interference
RFP	- Request For Proposals
RFS	- Remote File System
RGB	- Red Green Blue
RGP	- Raster Graphics Processor
RH	- Right Hand
RHS	- Right Hand Side
RI	- Rhode Island
RIACS	- Research Institute for Advanced Computer Science (NASA)
RIAS	- Radio In the American Sector, berlin
RIF	- Reading Is Fundamental
RIF	- Reduction In Force
RILM	- Repertoire International de Literature Musicale
RIP	- Rest In Peace (or Requiescat In Pace : latin)
RISC	- Reduced Instruction Set Computer
RITA	- Recognition of Information Technology Achievement award
RJE	- Remote Job Entry
RLC	- Resistor Inductor Capacitor
RLL	- Run Length Limited
RMATS	- Remote Maintenance Administration and Traffic System
RMS	- Root Mean Square
RMS	- Royal Mail Ship
RN	- Registered Nurse
RN	- Royal Navy
RNA	- RiboNucleic Acid
RNZAF	- Royal New Zealand Air Force
ROFF	- Run-OFF
ROG	- Receipt Of Goods
ROM	- Range Of Motion
ROM	- Read Only Memory
ROM	- Rupture Of Membrane (as in birth)
ROTC	- Reserve Officers' Training Corps
ROTS	- Rotary Out Trunks Selectors
ROYGBIV	- Red, Orange, Yellow, Green, Blue, Indigo, Violet
RPC	- Remote Procedure Call
RPG	- RePort Generator
RPG	- Role Playing Game
RPM	- Revolutions Per Minute
RPN	- Reverse Polish Notation
RPO	- Railway Post Office
RPS	- Revolutions Per Second
RPV	- Remotely Piloted Vehicle
RQ	- RuneQuest
RR	- RailRoad
RR	- Route Relay
RR	- Rural Route
RRO	- Rate and Route Operator
RS	- Recording Secretary
RS	- Revised Status
RS	- Right Side
RS	- Royal Society
RSFSR	- Russian Soviet Federated Socialist Republic
RSN	- Real Soon Now
RSU	- Remote Switching Unit
RSV	- Revised Standard Edition
RSVP	- Repondez S'il Vous Plait (please reply)
RSWC	- Right Side up With Care
RT	- RadioTelephone
RT	- RealTime
RTA	- Remote Trunk Arrangement
RTAC	- Regional Technical Assistance Center
RTF	- Rich Text Format
RTFM	- Read The F***ing Manual
RTG	- Radioisotope Thermoelectric Generator
RTR	- Reel-To-Reel
RTTY	- Radio Teletype
RU	- Receive Unit
RW	- Right Worshipful
RW	- Right Worthy
S	- South
S	- Supplement
S&C	- Skull & Crossbones
SA	- Salvation Army
SA	- Seaman Apprentice
SA	- Service Assistant
SA	- Sex Appeal
SA	- Sine Anno (without date)
SA	- South Africa
SA	- South America
SA	- Subject to Approval
SAA	- South Atlantic Anomaly
SAA	- Systems Application Architecture
SAC	- Special Area Code
SAC	- Strategic Air Command (see TAC)
SADD	- Students Against Drunk Driving
SAM	- Surface-to-Air Missile
SAMA	- Step-by-step Automatic Message Accounting
SAMTO	- Space And Missile Test Organization
SAP	- Second Audio Program
SAR	- Synthetic Aperture Radar
SARTS	- Switched Access Remote Test System
SASE	- Self-Addressed Stamped Envelope
SASI	- Shugart Associates Systems Interface
SAW	- Surface Acoustic Wave
SBA	- Small Business Administration
SC	- Sectional Center
SC	- South Carolina
SC	- SubCommittee
SCAD	- Subsonic Cruise Armed Decoy
SCADC	- Standard Central Air Data Computer
SCAME	- SCreen oriented Anti-Misery Editor
SCAMP	- Single-Chip A-series Mainframe Processor
SCAN	- Switched Circuit Automatic Network
SCC	- Switching Control Center (or Specialized Common Carriers) 
SCCS	- Source Code Control System
SCE	- Signal Conversion Equipment
SCE	- Structure Chart Editor
SCI	- SpaceCraft Incorporated
SCIFI	- SCIence FIction (often used pejoratively of what really isn't)
SCO	- Santa Cruz Operation
SCOOPS	- SCheme Object Oriented Programming System
SCOTS	- Surveilance and Control Of Transmission Systems
SCSI	- Small Computer Systems Interface
SCUBA	- Self Contained Underwater Breathing Apparatus
SCUD	- Subsonic Cruise Unarmed Decoy
SD	- South Dakota
SDI	- Standard Disk Interconnect
SDI	- Strategic Defense Initiative
SDLC	- Synchronous Data Link Control
SDO	- Staff Duty Officer 
SE	- South East
SEATO	- SouthEast Asia Treaty Organization
SEC	- Security Exchange Commission
SECNAV	- SECretary of the NAVy
SED	- Stream EDitor
SEI	- Software Engineering Institute (Carnegie Mellon)
SEL	- Software Engineering Laboratory
SEM	- Scanning Electron Microscope
SF	- San Francisco
SF	- Science Fiction; Speculative Fiction
SF	- Standard Form
SF	- Star Frontiers
SFRPG	- Science Fiction Role Playing Game
SG	- StarGuard
SG	- SubGroup
SGML	- Standard Generalized Markup Language
SHAPE	- Supreme Headquarters Allied Powers Europe
SHAR	- SHell ARchiver
SHCD	- Sherlock Holmes Consulting Detective
SHF	- Super High Frequency (3-30GHz)
SHRPG	- Super Hero Role Playing Game
SI	- Staten Island
SIAM	- Society for Industrial and Applied Mathematics
SIG	- Special Interest Group
SIGCAT	- Special Interest Group for Cd-rom Applications Technology
SIMD	- Single Instruction, Multiple Data
SIMM	- Single In-line Memory Module
SIMM	- System Integrated Memory Module
SINE	- SINE is not EINE
SIPS	- Satellite Imagery Processing System
SIS	- Strategic Information System
SISCOM	- Satellite Information System COMpany
SITA	- Societe Internationale Telecommunications Aeronautiques
SJ	- Society of Jesus
SL	- Salvage Loss
SLA	- Special Libraries Association
SLA	- Synchronous Line Adapter
SLAN	- Sine Loco, Anno, (vel) Nomine (without place, year, or name)
SLAR	- Side Looking Airborne Radar
SLBM	- Submarine Launched Ballistic Missiles
SLDC	- Synchronous Data Link Control
SLIP	- Serial Line Internet Protocol
SLP	- Super Long Play (VHS VCR)
SM	- Service Mark
SMA	- Sergeant Major of the Army
SMA	- Spectrum Manufacturers Association
SMC	- Small Magellanic Cloud (see LMC)
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."
SMILS	- Sonobuoy Missile Impact Location System
SMM	- Solar Maximum Mission
SMTP	- Simple Mail Transfer Protocol
SN	- Super Nova
SNA	- Systems Network Architecture (IBM network)
SNADS	- SNA Distribution Services
SNAFU	- Situation Normal -- All Fouled Up (also, F*cked)
SNAP	- Shipboard Non-tactical Automated data Processing program
SNCF	- Societe National des Chemins de Fer (French National Railways)
SNF	- Server-Natural Format
SNMP	- Simple Network Management Protocol
SNOBOL	- StriNg Oriented symbOLic Language
SNR	- Signal to Noise Ratio
SO	- Seller's Option
SO	- Significant Other
SO	- Space Opera
SO	- Strike Out
SOAP	-  Symbolic Optimizing Assembler Program
SOH	- Start Of Header, ASCII control character (dec=01,control-A)
SOHIO	- Standard Oil of oHIO
SOL	- Short on Landing (or, colloquially, Shit Out of Luck)
SONAR	- SOund Detection And Ranging
SOP	- Standard Operating Procedure
SOS	- Silicon On Sapphire
SP	- Shore Patrol
SP	- Short Play (VHS VCR)
SP	- Southern Pacific
SP	- Stack Pointer
SP	- Star Patrol
SPA	- Software Publishers Association
SPAG	- Standards Promotion and Applications Group
SPAR	- Stock Points Adp Replacement
SPARC	- Scalable Processor ARChitecture
SPARC	- Standards, Planning, And Requirements Committee
SPAWAR	- naval SPAce and WARfare command
SPC	- Software Productivity Consortium
SPCA	- Society for the Prevention of Cruelty to Animals
SPCC	- Society for the Prevention of Cruelty to Children
SPEC	- Systems Performance Evaluation Cooperative
SPITBOL	- SPeedy ImplemenTation of snoBOL
SPNI	- Society for the Protection of Nature in Israel
SPUR	- Systech Pluraxial Unplug Repeater
SQL	- Structured Query Language
SQUID	- Superconducting QUantum Interference Device
SRAM	- Short Range Attack Missile
SRAM	- Static RAM
SRB	- Solid fuel Rocket Booster
SRI	- Stanford Research Institute
SRO	- Standing Room Only
SSA	- Social Security Administration
SSB	- Single Side Band
SSE	- South-SouthEast
SSFF	- Showcase Software Factory of the Future
SSG	- Staff SerGeant
SSI	- Small Scale Integration
SSI	- Supplemental Security Income
SSR	- Secondary Surveillance Radar
SSR	- Soviet Socialist Republic
SSTV	- Slow Scan TeleVision
SSW	- South-SouthWest
ST	- Short Ton
STARS	- Software Technology for Adaptable, Reliable Systems
STD	- Sacrae Theologiae Doctor (doctor of sacred theology)
STD	- Sexually Transmitted Disease (replaces VD)
STD	- State Transition Diagram
STD	- Subscriber Trunk Dialing (British for DDD)
STILO	- Scientific and Technical Intelligence Liaison Office
STL	- St. Louis (airport designation)
STN	- SuperTwisted Nematic
STOL	- Short TakeOff and Landing
STP	- Software Through Pictures
STP	- Standard Temperature and Pressure (see NTP)
STRPG	- Star Trek:  The Role-Playing Game
STV	- Single Transferable Vote
SUM	- Symantec Utilities for Macintosh
SUNOCO	- SUN Oil COmpany
SUNY	- State University of New York
SVID	- System V Interface Definition
SW	- South West
SW	- SuperWorld
SWIFT	- Society for Worldwide Interbank Financial Communications
SWS	- Scientific Workstation Support
T	- Traveler
T&T	- Tunnels & Trolls
TA	- Teaching Assistant
TAC	- Tactical Air Command (see SAC)
TAC	- Terminal Access Controller
TACCS	- Tactical Army Combat service support Computer System
TAE	- Transportable Applications Environment
TAR	- Tape ARchiver
TB	- TuBerculosis
TBA	- To Be Announced
TBD	- To Be Determined
TC	- Teachers College
TCA	- Terminal Controlled Airspace
TCP/IP	- Transmission Control Protocol/Internet Protocol
TCSEC	- Trusted Computer System Evaluation Criteria (orange book)
TCT	- To Challenge Tomorrow
TD	- TouchDown
TD	- Treasury Department
TDCC	- Transportation Data Coordinating Committee
TDE	- Transition Diagram Editor
TDI	- Trusted Database Interpretation
TDY	- Temporary DutY
TECO	- Tape Editor and COrrector
TECO	- Text Editor and COrrector
TEFLON	- polyTEtraFLuOrethyleNe
TFP	- Tops Filing Protocol
TFS	- Translucent File System
TFT	- The Fantasy Trip
TFT	- Thin Film Transistor
TG	- Thieves' Guild
THIEF	- THief Isn't Even Fine
THIEF	- This Here Isn't Even Fine
THOR	- Tandy High-intensity Optical Recording
TI	- Texas Instruments
TIA	- Thanks In Advance (special to USENET)
TIA	- Transient Ischemic Attack
TIC	- TermInfo Compiler
TID	- Ter In Die (three times a day)
TIFF	- Tag Image File Format
TKO	- Technical Knock Out
TL	- Total Loss
TLA	- Three Letter Acronym
TLC	- Tender Loving Care
TLI	- Transort-Level Interface
TM	- TradeMark
TMA	- Tycho Magnetic Anomaly (2001)
TMAC	- Treasury department's Multiuser Acquisition Contract
TMIS	- Telecommunications Management Information System
TMO	- Telephone Money Order
TMP	- The Morrow Project
TN	- Tennessee
TN	- Twisted Nematic
TNT	- TriNitro Toluene
TO	- Telegraph Office
TO	- Turn Over
TODS	- Transactions on Database Systems (ACM)
TOMS	- Transactions on Mathematical Software (ACM)
TOOIS	- Transactions on Office Information Systems (ACM)
TOP	- Technical/Office Protocol
TOPLAS	- Transactions on Programming Languages and Systems (ACM)
TORES	- Text ORiented Editing System
TOW	- Tube launched, Optically tracked, and Wire guided
TP	- Transaction Processing
TPC	- The Phone Company (from classic movie: _The President's Analyst_)
TPI	- Tracks Per Inch
TPO	- Traveling Post Office
TPS	- Technical Publishing Software
TPS	- TeleProcessing Services
TROFF	- Text RunOFF, text formatter
TRUSIX	- TRUSted unIX
TRW	- Thompson, Ramo, and Woolridge
TS	- Top Secret
TSD	- Total System Design
TSP	- Teleprocessing Services Program
TSP	- Thrift Savings Plan
TSP	- Time Synchronization Protocol
TSP	- TriSodium Phosphate
TSR	- TSR (Fortune 500 Company that manufactures Dungeons & Dragons)
TTFN	- Tah Tah, For Now
TTL	- Transistor Transistor Logic
TTMA	- Tennessee Tech Microcomputer Association
TTU	- Tennessee Technological University
TTY	- TeleTYpe
TUNIS	- Toronto UNIversity System
TV	- TeleVision
TVA	- Tennessee Valley Authority
TW	- Thieves' World
TWA	- Trans World Airlines
TWIMC	- To Whom It May Concern
TWT	- Traveling Wave Tube
TWX	- TeletypeWriter eXchange
TX	- Texas
U	- Universe
UA	- United Artists
UAR	- United Arab Republic
UAR	- User Action Routine
UART	- Universal Asynchronous Receiver Transmitter
UBA	- UniBus Adapter
UBC	- Universal Bibliographic Control
UCB	- University of California at Berkeley
UCD	- University of California at Davis
UCI	- University of California at Irvine
UCLA	- University of California at Los Angeles
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
UDB	- Unified DataBase
UDP	- User Data Protocol
UEC	- User Environment Component
UFO	- Unidentified Flying Object
UH	- Upper Half
UHF	- Ultra High Frequency (300-3000MHz)
UIMS	- User Interface Management System
UK	- United Kingdom
UL	- Underwriters Laboratory
ULANA	- Unified Local-Area Network Architecture
UMT	- Universal Military Training
UN	- United Nations
UNESCO	- United Nations Educational, Scientific, & Cultural Organization
UNICEF	- United Nations International Children's Emergency Fund (now United Nat. Child. Fund)
UNICS	- UNiplex Information Computer Services
UNIX	- Not an acronym at all.  Was a joke on MIT's MULTICS.
UNO	- United Nations Organization
UP	- Union Pacific
UPC	- Universal Product Code
UPI	- United Press International
UPS	- Uninterruptible Power Supply
UPS	- United Parcel Service
UR	- University of Rochester
USA	- Union of South Africa
USA	- United States Army
USA	- United States of America
USAF	- United States Air Force
USAFA	- United States Air Force Academy (in Colorado Springs)
USC	- University of Southern California
USCG	- United States Coast Guard
USDA	- United States Department of Agriculture
USES	- United States Employment Service
USFL	- United States Football League
USGS	- United States Geological Survey
USIA	- United States Information Agency
USM	- United States Mail
USMC	- United States Marine Corps
USN	- United States Navy
USO	- United Service Organizations
USO	- Unix Software Operation
USP	- United States Pharmacopeia
USPS	- United States Postal Service
USR	- User Service Routines
USS	- United States Ship
USSR	- Union of Soviet Socialist Republics
USSS	- User Services and Systems Support
USW	- Und So Weiter
UT	- UTah
UT	- Universal Time
UT	- University of Tennessee
UT	- University of Texas
UTC	- Universal Coordinated Time
UUCP	- Unix-to-Unix CoPy
UUG	- Unix User Group
UV	- UltraViolet
UW	- UnderWriter
UW	- Univ of Wisconsin
V&V	- Villains & Vigilantes
VA	- Veterans Administration
VA	- Virginia
VAN	- Value Added Network (e.g. Tymnet, Telenet, etc)
VANS	- Value-Added Network Services
VAR	- Value Added Remarketer (reseller)
VASI	- Visual Approach Slope Indicator
VAT	- Value Added Tax
VAX	- Virtual Address eXtended
VAXBI	- VAX Bus Interconnect
VCM	- Voice Coil Motor
VCO	- Voltage Controlled Oscillator
VCR	- VideoCassette Recorder
VCU	- Virginia Commonwealth University
VD	- Venereal Disease (see also STD)
VDFM	- Virtual Disk File Manager
VDI	- Virtual Device Interface
VDM	- Vienna Development Method
VDM	- Virtual Device Metafile
VDT	- Video Display Terminal
VF	- Video Frequency
VFO	- Variable Frequency Oscillator
VFW	- Volunteer Fire Department
VG	- Very Good
VG	- Vicar-General
VGA	- Video Graphics Array
VHDL	- Vhsic Hardware Description Language
VHF	- Very High Frequency (30-300MHz)
VHS	- Video Home System (VCR)
VHSIC	- Very High Speed Integrated Circuit
VI	- VIsual editor
VIABLE	- Vertical Installation Automation BaseLinE
VILE	- VI Like Emacs
VINE	- Vine Is Not Emacs
VIP	- Very Important Person
VISTA	- Volunteers In Service To America
VITA	- Vme International Trade Association
VJ	- Video Jockey
VL	- Vulgar Latin
VLA	- Very Large Array radio telescope in Arizona or New Mexico
VLF	- Very Low Frequency (3-30KHz)
VLIW	- Very Long Instruction Word
VLSI	- Very Large Scale Integration
VM	- Virtual Memory
VM/CMS	- Virtual Machine/Conversational Monitor System
VMM	- Virtual Memory Manager
VMOS	- Vertical Metal Oxide Semiconductor (V-MOS) (see MOS)
VMR	- Vertical Market Reseller
VMS	- Vertical Motion Simulator
VMS	- Virtual Memory System
VOA	- Voice Of America
VOIS	- Voice-Operated Information System
VOQ	- Visiting Officer's Quarters
VPI&SU	- Virginia Polytechnic Institute and State University
VRC	- Vertical Redundancy Character
VRM	- Virtual Resource Manager
VSAT	- Very Small Aperture Terminal, satellite dish
VSX	- X/open Verification Suite
VTAM	- Virtual Telecommunications Access Method
VTOC	- Volume Table Of Contents
VTOL	- Vertical TakeOff and Landing
VTR	- VideoTape Recorder
VUP	- Vax Unit of Performance
VVSS	- Vertical Volute Spring Suspension
W	- West
W	- Width
WA	- Washington
WA	- Western Australia
WAC	- Womens Air Corps
WAN	- Wide Area Network
WARC	- World Administrative Conference
WATS	- Wide Area Telephone Service
WB	- Water Ballast
WB	- WayBill
WBC	- White Blood Cells
WC	- Water Closet
WC	- Without Charge
WCTU	- Women's Christian Temperance Union
WG	- Working Group
WH	- WarHammer
WHBL	- World Home Bible League
WI	- Wisconsin
WIS	- WWMCCS Information System
WITS	- Washington Interagency Telecommunications System
WMSCR	- Weather Message Switching Center Replacement
WOPR	- War Operations Planned Response (from "Wargames" movie)
WORM	- Write Once, Read Many time
WOW	- Worlds of Wonder
WP	- Word Processing
WP	- Working Paper
WSI	- Wafer Scale Integration
WSW	- West-SouthWest
WU	- Washington University
WV	- West Virginia
WW	- World War
WWI	- World War I
WWII	- World War II
WWMCCS	- World-Wide Military Command and Control System
WY	- Wyoming
WYSIWIS	- What You See Is What I See
WYSIWYG	- What You See Is What You Get
XCF	- eXperimental Computing Facility
XD	- without Dividend
XDR	- eXternal Data Representation
XINU	- XINU Is Not UNIX
XL	- eXtra Large
XMTR	- transMiTteR (the X is for trans)
XNS	- Xerox Network Service
XO	- eXecutive Officer
XOR	- eXclusive OR (logical function)
XSECT	- cross SECTion
XTAL	- crysTAL (another version of x for crys, see XMTR)
XUI	- X-windows User Interface
YA	- Yet Another
YACC	- Yet Another Compiler Compiler
YB	- YearBook
YMCA	- Young Mens Christian Association
YMHA	- Young Mens Hebrew Association
YOB	- Year Of Birth
YP	- Yellow Pages
YRS	- Ysgarth Rules System
YST	- Yukon Standard Time
YT	- Yukon Territory
YT	- Yukon Time
YTD	- Year To Date
YWCA	- Young Womens Christian Association
YWHA	- Young Womens Hebrew Association
Z	- Zenith
Z	- Zero
ZB	- Zero Beat
ZETA	- Zero Energy Thermonuclear Assembly
ZGS	- Zero Gradient Synchrotron
ZI	- Zonal Index
ZIP	- Zone Improvement Plan (post office code)
ZK	- barrage balloon (navy symbol)
ZMRI	- Zinc Metals Research Institute
ZPG	- Zero Population Growth
ZPRSN	- Zurich Provisional Relative Sunspot Number
ZST	- Zone Standard Time
ZT	- Zone Time
ZWEI	- Zwei Was Eine Initially
--leave-this-line-in-database-to-mark-end-of-master-copy--

--
Dave Sill (de5 at ornl.gov)	  It will be a great day when our schools have
Martin Marietta Energy Systems    all the money they need and the Air Force
Workstation Support               has to hold a bake sale to buy a new bomber.