PowerShell/Data/Abbr/general.csv

1	ABBR	MEANING
2	0D	obvious deed
3	1AM	Air Mechanic 1st Class
4	1D	One-Dimensional
5	2AM	Air Mechanic 2nd Class
6	2D	Two-dimensional
7	2LA	Two Letter Acronym
8	2Lt	2nd Lieutenant
9	3AM	Air Mechanic 3rd Class
10	3D	Three-Dimensional
11	3G	Third-generation mobile telephone system
12	3i	Investors In Industry (venture capitalists)
13	3M	Minnesota Mining and Manufacturing Company
14	4G	Fourth-generation mobile telephone system
15	4WD	Four-wheel drive
16	5D	Five-Dimensional
17	6D	Six-Dimensional
18	7D	Seven-Dimensional
19	8D	Eight-Dimensional
20	9D	Nine-Dimensional
21	A	Ampere
22	A10	Atlantic 10 Conference
23	A1C	Airman First Class
24	A4	European standard office paper size
25	aA	Attoampere
26	AAA	administration,authorization,and authentication,American Automobile Association ('Triple-A'),anti-aircraft artillery,Amateur Athletic Association (of England),Asistencia Asesoría y Administración (Spanish,'Assistance,Consulting,and Administration'—Mexican professional wrestling promotion)
27	AAAS	American Association for the Advancement of Science
28	AAAV	Advanced Amphibious Assault Vehicle
29	AADAC	Alberta Alcohol and Drug Abuse Commission
30	AADD	Adult attention deficit disorder
31	AADT	annual average daily traffic
32	AAFES	Army and Air Force Exchange Service
33	AAIS	advanced airborne interceptor simulator
34	AAM	air-to-air missile
35	AAMOF	as a matter of fact
36	AAN	American Academy of Nursing
37	AANEAS	Anglo-Australian Near-Earth Asteroid Survey
38	AAODL	Atmospheric Aerosols and Optics Data Library
39	AAPC	Accounting and Auditing Policy Committee
40	AARP	American Association of Retired Persons (now officially known only by the initials)
41	AASPEM	advanced air-to-air system performance evaluation model
42	AAT	Australian Antarctic Territory
43	AAV	Amphibious Assault Vehicle
44	AAWC	anti-air warfare commander
45	AB	Able Seaman (both the rank and the occupation),Alberta (postal symbol)
46	ABB	ASEA Brown Boveri (Swiss-Swedish multinational company)
47	ABBA	Agnetha,Benny,Björn,Anni-Frid (Swedish pop group)
48	ABC	the first three letters of the Latin script known as the alphabet
49	ABC	abstinence, be faithful, condoms
50	ABC	Active Body Control
51	ABC	airway, breathing, circulation
52	ABC	Alcoholic Beverage Commission
53	ABC	alien big cat
54	ABC	always be careful
55	ABC	American-born Chinese
56	ABC	anti-lock brake controller
57	ABC	atomic, biological, chemical
58	ABCS	(U.S.) Army Battle Command System
59	ABET	Accreditation Board for Engineering and Technology
60	ABFIST	Advanced Bradley Full Crew Interactive Skills Trainer
61	ABGI	Addington-Barker Group International
62	ABIN	Agência Brasileira de Inteligência (Brazilian Intelligence Agency)
63	ABL	American Basketball League
64	ABLE	AirBorne Law Enforcement (police air support unit)
65	ABMC	American Battle Monuments Commission
66	ABN	Australian Business Number (a number issued by the Australian government as registration of a business and used for taxation purposes)
67	ABPI	Association of the British Pharmaceutical Industry
68	ABRSM	Associated Board of the Royal Schools of Music
69	ABS	acrylonitrile butadiene styrene, or: anti-lock braking system
70	ABSA	Amalgamated Banks of South Africa
71	ABSTRIPS	abstraction-based STRIPS
72	ABV	Alcohol by volume
73	ABW	Aruba (ISO 3166 trigram)
74	Ac	Actinium
75	AC	Adriamycin-Cyclophosphamide (chemotherapy),Air Conditioning,Aircraftman,Alternating Current,Altocumulus,ante Christum (Latin,'before Christ'; see BC),ante cibum (Latin,'before meals'),Antigua and Barbuda (FIPS 10-4 country code),Associazione Calcio (Italian,'football (soccer) club'),A/C,Air Conditioned/Conditioning,Aircraft
76	aC	Attocoulomb
77	AC1	Aircraftman 1st Class
78	AC2	Aircraftman 2nd Class
79	ACA	Affordable Care Act,shorthand for the Patient Protection and Affordable Care Act,commonly called 'Obamacare',Airspace Control Authority,Airspace Co-ordination Area,A Current Affair
80	ACARS	Aircraft Communications Addressing and Reporting System
81	ACB	Asociación de Clubes de Baloncesto (Spanish for 'Association of Basketball Clubs')
82	ACCAC	Awdurdod Cymwysterau,Cwricwlwm ac Asesu Cymru (Qualifications,Curriculum and Assessment Authority for Wales)
83	ACCD	American Coalition of Citizens with Disabilities
84	ACCS	Air Communications and Control Squadron
85	ACDA	Arms Control & Disarmament Agency
86	ACDC	Alternating Current Direct Current,the name of an Australian rock music band,a term for a bisexual person,A/Cdre,Air Commodore
87	ACDT	Apple Certified Desktop Technician,Australian Central Daylight Time
88	ACES	Aerolíneas Centrales de Colombia (Spanish,'Central Colombian Airlines'),Auxiliary Campus Enterprises and Services of Alfred State College
89	ACF	Administration for Children and Families,American Car and Foundry,American Culinary Federation
90	ACHT	Average Call Hold Time
91	ACINT	Acoustic Intelligence
92	ACK	Acknowledge (telecommunications; cf. NAK)
93	ACL	Access Control List,Anterior cruciate ligament; the initialism can also refer to an injury to this ligament.,Atlantic Coast Line Railroad
94	ACLJ	American Center for Law and Justice
95	ACLOS	Automatic CLOS (missile control system)
96	ACLS	American Council of Learned Societies
97	ACLU	American Civil Liberties Union,American Communist Lawyers Union (pejorative slang for the above)
98	ACM	many,including Association for Computing Machinery; see entry
99	ACMC	(U.S.) Assistant Commandant of the Marine Corps
100	ACN	Airborne Communications Node,Australian Company Number (number issued by the Australian government as registration of a limited liability company)
101	ACNA	Anglican Church in North America
102	ACO	Airspace Control Order
103	ACOBA	Advisory Committee on Business Appointments
104	ACOG	American College of Obstetricians and Gynecologists
105	ACOM	(U.S.) Atlantic Command
106	ACORN	Association of Community Organizations for Reform Now
107	ACP	African,Caribbean and Pacific Group of States,Air Control Point
108	ACR	Advanced Concepts and Requirements
109	ACRI	African Crisis Initiative
110	ACRT	Advanced Concepts Research Tool simulator
111	ACS	Affiliated Computer Services (NYSE ACS),Alaska Communications Service,American Cancer Society,American Chemical Society,Association of Caribbean States,Australian Computer Society
112	ACSC	Army Command and Staff College (various nations)
113	ACST	American Cooperative School of Tunis
114	ACST	Australian Central Standard Time
115	ACT	Adaptive Control of Thought (cognitive model),American College Test (ing Program),Australian Capital Territory (also postal symbol),ACT UP,AIDS Coalition to Unleash Power
116	ACTD	Advanced Concept Technology Demonstration
117	ACTF	(U.S.) Army Constructive Training Federation,Australian Children's Television Foundation,ACT-R,ACT-Rational (cognitive model),ACT-R/PM,ACT-R/Perceptual-Motor (cognitive model)
118	ACTU	Australian Council of Trade Unions
119	ACU	American Conservative Union
120	ACUF	Advisory Committee on Undersea Features,American Conservative Union Foundation
121	AD	Air Defence,Andorra (ISO 3166 digram),Anno Domini (Latin,'In the year of our Lord')
122	ADA	Air Defence Artillery,American Dental Association,Assistant District Attorney,Americans with Disabilities Act (see also the similar but non-acronymic Ada programming language)
123	ADAC	Allgemeiner Deutscher Automobil-Club (German for 'General German Automobile Club')
124	ADAGE	Air Defense Air to Ground Engagement (simulation)
125	ADAP	AIDS Drug Assistance Program
126	ADAS	Asiago-DLR Asteroid Survey
127	ADAT	Alesis Digital Audio Tape (recording format)
128	ADATS	Agricultural Development and Training Society,Air Defence Anti-Tank System,Australian Defence Air Traffic System
129	ADB	Asian Development Bank
130	ADC	Aide De Camp,U.S. Air Defense Command (1946-1992),Apple Display Connector,Program Against Digital Counterfeiting of Currency
131	ADD	Analog Digital Digital (CD quality),Attention-Deficit Disorder,Administration on Developmental Disabilities
132	ADDIE	Analyze Design Develop Implement and Evaluate
133	ADDNS	Advanced Deployable Day/Night Simulation
134	ADGB	Air Defence of Great Britain
135	ADHD	Attention-Deficit Hyperactivity Disorder
136	ADHS	Attention-Deficit Hyperactivity Syndrome
137	ADI	Acceptable/Allowable Daily Intake
138	ADIZ	Air Defence Identification Zone
139	ADL	Anti-Defamation League
140	ADM	Administrative,,Admiral,and the U.S. Public Health Service Commissioned Corps,Archer Daniels Midland,Assistant Deputy Minister
141	ADOA	Air Defence Operations Area
142	ADP	Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing
143	ADRG	Arc-second Raster Chart (ARC) Digitized Raster Graphics
144	ADS	Active Denial System,Astrophysics Data System,Attention Deficit Syndrome
145	ADSR	Attack,Decay,Sustain,Release (sound envelope specification)
146	ADT	Atlantic Daylight Time (UTC−3 hours)
147	ADTB	Army Doctrine and Training Bulletin
148	ADW	Air Defence Warning
149	AE	Armed Forces Africa/Canada/Europe/Middle East (postal symbol),United Arab Emirates (ISO 3166 digram; FIPS 10-4 country code),Artix Entertainment,American Eagle,A&E, Arts & Entertainment Network,the original name for the U.S. TV channel now known as A&E Network
150	AEDT	Australian Eastern Daylight Time
151	AEF	American Expeditionary Force
152	AEGIS	Airborne Early warning Ground environment Interface Segment (fake etymology)
153	AESR	Aeronautical Equipment Service Record
154	AEST	Australian Eastern Standard Time
155	aet	After extra time (Football)
156	AEW	Airborne Early Warning,Airborne Electronic Warfare
157	AF	Afghanistan (FIPS 10-4 country code; ISO 3166 digram),Air Force,As f*ck
158	aF	Attofarad
159	AFA	U.S. Air Force Academy,Asociación del Fútbol Argentino (Spanish for 'Argentine Football Association')
160	AFAIC	As Far As I'm Concerned
161	AFAICT	As Far As I Can Tell
162	AFAIK	As Far As I Know
163	AFAIR	As Far As I Remember/Recall
164	AFAM	Associazione Friulana di Astronomia e Meteorologia (Italian,'Friuli Association of Astronomy and Meteorology'),Department of African and Afro-American Studies,University of North Carolina at Chapel Hill — notable for its links to the school's academic-athletic scandal in the 2010s
165	AFATDS	Advanced Field Artillery Tactical Data System
166	AFCEA	Armed Forces Communications and Electronics Association
167	AFDB	African Development Bank
168	AFES	Automatic Fire Extinguishing System
169	AFG	Afghanistan (ISO 3166 trigram)
170	AFI	French Territory of the Afars and Issas (ISO 3166 trigram; obsolete since 1977),'Agencia Federal de Investigaciónes' (México)
171	AFIST	Abrams Full Crew Interactive Skills Trainer
172	AFJ	April Fool's Joke
173	AFK	Away From Keyboard (Internet chat abbreviation)
174	AFLAC	American Family Life Assurance Company of Columbus
175	AFO	Association of Field Ornithologists
176	AFOSR	U.S. Air Force Office of Scientific Research
177	AFP	Agence France-Presse (French,'French Press Agency'), Australian Federal Police
178	AFQT	Armed Forces Qualification Test
179	AFRC	Air Force Reserve Command
180	AFRL	Air Force Research Laboratory
181	AFROTC	Air Force Reserve Officer Training Corps
182	AFRTS	Armed Forces Radio and Television Service
183	AFSC	U.S. Air Force Staff College (obsolete; replaced with JFSC), U.S. Air Force Systems Command
184	AFSCN	U.S. Air Force Satellite Control Network
185	AFSPC	Air Force Space Command
186	AFT	American Farmland Trust
187	AFV	armoured fighting vehicle
188	AG	air gunner,Aktiengesellschaft (German,'incorporated'),Algeria (FIPS 10-4 country code),Antigua and Barbuda (ISO 3166 digram),Assemblies of God
189	ag	Attogram
190	Ag	Silver (Latin argentum)
191	AGA	AB Gas-accumulator ('ah-gah',Swedish company),Advanced Graphics Architecture
192	AGARD	Advisory Group for Aerospace Research and Development
193	AGARDograph	Advanced Guidance for Alliance Research and Development publication
194	AGASA	Akeno Giant Air Shower Array (cosmic ray detector)
195	AGB	Internal Nintendo initialism (Advanced Game Boy) for Game Boy Advance
196	AGC	Adjutant General's Corps (British Army)
197	AGDC	Australian Game Developers' Conference
198	AGI	Auxiliary Group Intelligence
199	AGM	Annual General Meeting
200	AGN	Active Galactic Nucleus
201	AGO	Angola (ISO 3166 trigram)
202	AGP	Accelerated Graphics Port
203	AGRICOLA	Agriculture Online Access
204	AGS	Alaska Ground Station (LandSat)
205	AGTS	Advanced Gunnery Training System
206	AGU	American Geophysical Union
207	AGW	Autonomous Guided Weapon
208	Ah	Ampere-hour
209	AH	Attack Helicopter
210	aH	Attohenry
211	AHA	American Heart Association
212	AHCPR	Agency for Health Care Policy and Research (obsolete; replaced with AHRQ)
213	AHEC	Australian Health Ethics Committee
214	AHPCRC	Army High Performance Computing Research Center
215	AHQ	Air Headquarters
216	AHRQ	Agency for Healthcare Research and Quality
217	AHS	American Housing Survey
218	AI	Air Interdiction,Amnesty International,Artificial Insemination,Artificial Intelligence,Anguilla (ISO 3166 digram)
219	AIA	Aerospace Industries Association,American Institute of Architects,Anguilla (ISO 3166 trigram)
220	AIAA	American Institute of Aeronautics and Astronautics
221	AIC	African Independent Church,Animal Identification Coordinator
222	AICD	Australian Institute of Company Directors
223	AICMFP	And I Claim My Five Pounds
224	AID	U.S. Agency for International Development
225	AIDS	Acquired Immune Deficiency Syndrome
226	AIM	Australian Institute of Management
227	AIMP	Aurora Incremental Modernization Project
228	AIPAC	American Israel Public Affairs Committee
229	AIR	Aircraft Inventory Record
230	AIRFA	American Indian Religious Freedom Act
231	AIRS	Aerometric Information Retrieval System (obsolete; replaced with AFS)
232	AIS	Australian Institute of Sport,Automatic Identification System
233	AISB	(British Society for the Study of) Artificial Intelligence and the Simulation of Behaviour
234	aJ	Attojoule
235	AJ	Azerbaijan (FIPS 10-4 country code)
236	Ajax	Asynchronous JavaScript And XML
237	AJD	Astronomical Julian day
238	AJP	Allied Joint Publication
239	AJPW	All Japan Pro Wrestling
240	AK	Alaska (postal symbol)
241	aK	Attokelvin
242	AKA	Above knee amputation (orthopaedic usage)
243	AKDT	Alaska Standard Daylight Saving Time (UTC−8 hours)
244	AKP	Adalet ve Kalkınma Partisi (Turkish,'Justice and Development Party')
245	AKST	Alaska Standard Time (UTC−9 hours)
246	AL	Alabama (postal symbol),Albania (FIPS 10-4 country code; ISO 3166 digram),Anno Lucis (Latin,'Year of Light',in Masonic tradition,most often seen on plaques bearing the founding dates of buildings,in years AD and years AL)
247	Al	Aluminium
248	aL	Attolitre
249	ALA	Åland Islands (ISO 3166 trigram)
250	ALAP	As Long/Late As Possible
251	ALARM	Air-Launched Anti-Radar Missile
252	ALB	Albania (ISO 3166 trigram)
253	ALD	Accounting Line Designator (nuclear weapon targeting)
254	ALERT	Advanced Linked Extended Reconnaissance and Targeting,Attack and Launch Early Reporting to Theatre
255	ALF	Africa Leadership Forum,Alien Life Form (cf. ALF (TV series)),Animal Liberation Front
256	ALG	Algeria (IOC and FIFA trigram,but not ISO 3166)
257	ALGOL	ALGOrithmic Language
258	ALPA	Air Line Pilots Association
259	ALS	Amyotrophic Lateral Sclerosis
260	ALSHS	Abraham Low Self-Help Systems
261	ALSP	Aggregate Level Simulation Protocol
262	ALTE	Association of Language Testers in Europe
263	Am	Americium
264	AM	Amplitude Modulation and Ante Meridiem; see entry,Armenia (FIPS 10-4 country code; ISO 3166 digram)
265	AM1	Airman 1st class
266	AMCB	U.S. Army/Marine Corps Board
267	AMFOM	Advanced Missile Fly Out Model
268	AMFR	Age-specific Marital Fertility Rate,Amplitude Modulation Following Response
269	AMFRS	Advanced Multi-Function Radio Frequency System,Automatic Multisensor Feature-based Recognition System
270	AML	Acute Myeloid Leukaemia
271	AMLCD	Active Matrix Liquid Crystal Display
272	AMLO	Andrés Manuel López Obrador (Mexican politician),Anti-Money Laundering Office (Thailand government agency)
273	AMO	Atlantic Multidecadal Oscillation
274	AMOLED	Active-matrix organic light-emitting diode
275	AMOS	Advanced MOrtar System,Air Force Maui Optical and Supercomputing observatory
276	AMP	Adenosine MonoPhosphate,Automated Mission Planner
277	AMRAAM	Advanced Medium-Range Air-to-Air Missile
278	AMRDEC	U.S. Aviation & Missile Research,Development,& Engineering Center
279	AMS	Agriculture Marketing Service,American Mathematical Society
280	AMSAA	U.S. Army Materiel Systems Analysis Activity
281	AMSO	U.S. Army Model and Simulation Office
282	AMSU	Advanced Microwave Sounding Unit
283	AMTE	UK Admiralty Marine Technology Establishment (1977-1984)
284	AN	Andorra (FIPS 10-4 country code),Netherlands Antilles (ISO 3166 digram)
285	aN	Attonewton
286	ANA	Administration for Native Americans,Afghan National Army,All Nippon Airways,Anti-Nuclear Anti-body,Australian National Airways,Australian Natives' Association
287	ANC	African National Congress
288	AND	Andorra (ISO 3166 trigram)
289	ANFO	Ammonium nitrate/fuel oil (explosive)
290	ANGLiCo	Air/Naval Gunfire Liaison Company
291	ANL	Argonne National Laboratory
292	ANM	Acoustic Noise Monitor
293	ANOVA	ANalysis Of VAriance
294	ANS	Applied and Natural Sciences
295	ANSI	American National Standards Institute
296	ANT	Netherlands Antilles (ISO 3166 trigram),Antigua and Barbuda (IOC trigram,but not ISO 3166 or FIFA)
297	ANTM	America's Next Top Model
298	ANTY	Acronyms,No Thank You
299	ANWR	Arctic National Wildlife Refuge /ˈænwɑr/
300	ANZ	Australia and New Zealand Banking Group
301	ANZAC	Australian and New Zealand Army Corps
302	AO	Angola (FIPS 10-4 country code; ISO 3166 digram),Approach Officer (submarine),Area of Operations
303	AOC	Air Operations Centre,Air Officer Commanding
304	AOD	Adrenalin O.D. (punk rock band)
305	AOI	Angle Of Incidence (Arab Organization for Industrialization)
306	AOL	America OnLine
307	AOR	Area of Responsibility
308	AOSTH	Adventures of Sonic the Hedgehog
309	AOTS	Attack of the Show!
310	AOU	American Ornithologists' Union
311	AP	Advanced Placement,Air Publication,Andhra Pradesh (Indian state code),Armed Forces Pacific (postal symbol),Associated Press,Auto Pilot
312	APB	All Points Bulletin (police jargon)
313	APEC	Asia Pacific Economic Cooperation
314	APEDS	AMSAA Performance Estimates Data System
315	APEX	Applied Physics Express
316	APHA	American Public Health Association
317	APHIS	Animal and Plant Health Inspection Service
318	APL	Acute Promyeloid Leukaemia,Anti-Personnel Landmine,Applied Physics Laboratory (Johns Hopkins University)
319	APOD	Aerial Port (Airport) Of Debarkation
320	APOE	Aerial Port (Airport) Of Embarkation
321	APOLLO	Apache Point Observatory Lunar Laser-ranging Operation
322	APP	Allied Procedural Publication
323	APR	Annual Percentage Rate
324	AQIM	Al-Qaeda in the Islamic Maghreb
325	Ar	Argon
326	ARAG	Advanced Research and Assessment Group
327	ARB	Administrative Review Board
328	ARBA	Army Review Boards Agency
329	ARCA	Automobile Racing Club of America
330	ARCENT	United States Army Central Command
331	ARDA	Advanced Research and Development Activity (became DTO 2006)
332	ARF	ASEAN Regional Forum
333	ARG	Argentina (ISO 3166 trigram)
334	ARH	Armed Reconnaissance Helicopter
335	ARNet	Acquisition Reform Network
336	ARP	Applied Research Programme
337	ARPA	Advanced Research Projects Agency
338	ARRC	ACE Rapid Reaction Corps
339	ARRF	Allied Rapid Reaction Force
340	ARRL	American Radio Relay League
341	ARSC	Arctic Region Supercomputing Center
342	ARSPACE	U.S. Army Space Command
343	ARTCC	Air Route Traffic Control Center
344	ARWG	Army Research Working Group
345	AS	ActionScript
346	AS	American Samoa (postal symbol; ISO 3166 digram),Australia (FIPS 10-4 country code),Assam / Asom (Indian state code)
347	As	Arsenic
348	aS	Attosiemens
349	ASA	AcetylSalicylic Acid,American Standards Association,Army Security Agency,Atlantic Southeast Airlines
350	ASAP	As Soon As Possible
351	ASARS	Advanced Synthetic Aperture Radar System,Airborne Search and Rescue System
352	asbl	association sans but lucratif (French 'Non-profit organisation')
353	ASBO	Anti-Social Behaviour Order
354	ASCAP	American Society of Composers,Authors,and Publishers
355	ASCC	Army Service Component Commander,Automatic Sequence Controlled Calculator,Air Standardization Coordinating Committee
356	ASCII	American Standard Code for Information Interchange
357	ASD	(U.S.) Assistant Secretary of Defense,autism spectrum disorder
358	ASDIC	Allied Submarine Detection Investigation Committee (Sonar)
359	ASEAN	Association of Southeast Asian Nations
360	ASFAR	Americans for a Society Free of Age Restrictions
361	ASG	Area Support Group
362	ASIC	Australian Securities and Investments Commission,Aviation Security Identification Card
363	ASICS	Anima sana in corpore sano (Latin,'A sound mind in a sound body') (athletic shoe manufacturer)
364	ASIO	Australian Security Intelligence Organisation,Audio stream input output
365	ASIP	Advanced System Improvement Program,Army Stationing and Installation Plan,Application-specific instruction-set processor
366	ASL	Above Sea Level,American Sign Language (also known as Ameslan),'Age,Sex,Location?' (Internet slang)
367	ASM	Air-to-Surface Missile,American Samoa (ISO 3166 trigram),American Society for Metals,American Society for Microbiology
368	ASMB	American Society for Matrix Biology,Adult Swim Message Board
369	ASME	American Society of Mechanical Engineers,American Society of Magazine ors
370	ASMP	Air-Sol Moyenne Portée missile (French 'Medium-range air to surface'),Asymmetric multiprocessing
371	ASN	Associate of Science in Nursing
372	ASOC	Air Sovereignty Operations Centre,Air Support Operations Centre,Airport Security and Operations Centre,Antarctic and Southern Ocean Coalition,Atlanta Symphony Orchestra Chorus,Australian Standard Offence Classification
373	ASP	Active Server Pages,American Society of Primatologists,Ammunition Supply Point,Application Service Provider (cf internet service provider),Astronomical Society of the Pacific,Association of Surfing Professionals
374	ASPI	Australian Strategic Policy Institute
375	ASR	Alkali-silica reaction,Anti Slip Regulation
376	ASRAAM	Advanced Short-Range Air-to-Air Missile
377	ASSC	Association for the Scientific Study of Consciousness
378	AST	Atlantic Standard Time (UTC−4 hours)
379	ASTIA	Armed Services Technical Information Agency
380	ASTM	American Society for Testing and Materials
381	ASTREA	Aerial Support To Regional Enforcement Agencies (sheriff's air support unit)
382	ASUW	AntiSUrface Warfare
383	ASVAB	Armed Services Vocational Aptitude Battery(taken by juniors in high school in the USA)
384	ASVEL	Association Sportive Villeurbanne Éveil Lyonnais (Association Sportive is French for 'Sporting Association'; the club was founded through the merger of AS Villeurbanne and Éveil Lyonnais)
385	ASW	AntiSubmarine Warfare
386	ASWORG	(U.S.) AntiSubmarine Warfare Operations Research Group
387	ASX	Advanced Stream Redirector,Australian Securities Exchange
388	AT	Anti-Tank,Ashmore and Cartier Islands (FIPS 10-4 territory code),Austria (ISO 3166 digram),Advanced Technology (IBM Personal Computer/AT)
389	At	Astatine
390	aT	Attotesla
391	ATA	Advanced Technology Attachment (IBM Personal Computer),Afghan Transitional Authority,Allen Telescope Array,Antarctica (ISO 3166 trigram)
392	ATAC	Air Transportable Acoustic Communications
393	ATACMS	Army TACtical Missile System
394	ATAPI	Advanced Technology Attachment Packet Interface
395	ATAS	Air-To-Air Stinger (missile)
396	ATAT	Aiken Tactical Airsoft Team / Star Wars vehicle
397	ATB	Active Time Battle,British Antarctic Territory (ISO 3166 trigram; merged with AQ in 1979)
398	ATC	Air Training Corps, U.S. Air Transport Command (1942-1948), Athletic Trainer,Certified
399	ATCCIS	Army Tactical Command and Control Information System
400	ATESS	Aerospace and Telecommunications Engineering Support Squadron
401	ATF	French Southern Territories (ISO 3166 trigram),(U.S.) Bureau of Alcohol,Tobacco,Firearms and Explosives
402	ATG	Antigua and Barbuda (ISO 3166 and FIFA trigram)
403	ATGM	Anti-Tank Guided Missile
404	ATGW	Anti-Tank Guided Weapon
405	ATK	Attack
406	ATL	Atlanta,Georgia,the largest city and capital of Georgia
407	ATLAS	All-Terrain Lifter Army System,Assessment Tool for LAnd Systems
408	ATM	Automated Teller Machine,Asynchronous Transfer Mode,At The Moment
409	ATN	Dronning Maud Land (ISO 3166 trigram; merged with AQ in 1983)
410	ATO	Air Tasking Order,Australian Taxation Office
411	ATP	Adenosine TriPhosphate,Allied Tactical Publication,Ammunition Transfer Point
412	ATSD	(U.S.) Assistant Secretary of Defense
413	ATSDR	Agency for Toxic Substances and Disease Registry
414	ATV	All-Terrain Vehicle
415	ATWA	Air,Trees,Water,Animals
416	AU	African Union (was OAU before 2000),American University,Astronomical Unit,Australia (ISO 3166 digram),Austria (FIPS 10-4 country code)
417	Au	Gold (Latin Aurum)
418	AUC	Ab Urbe Condita / Anno Urbis Conditae (Latin 'from the founding of the city' / 'in the year since the founding of the city') (of Rome),Area Under the Curve (concentration time curve; medicine)
419	AUS	Australia (ISO 3166 trigram)
420	AUSCANNZUKUS	Australia,Canada,New Zealand,United Kingdom,United States (security designation)
421	Auslan	Australian Sign Language
422	AUT	Austria (ISO 3166 trigram)
423	AUTL	Army Universal Task List
424	AV	Anguilla (FIPS 10-4 territory code),Audio-Visual,Aviation
425	Av	Aperture value (photographic mode)
426	aV	Attovolt
427	AVA	American Viticultural Area
428	AVB	Audio Video Bridging
429	AVDLR	Aviation Depot Level Repair
430	AVGP	Armoured Vehicle, General Purpose
431	AVIM	Aviation Intermediate Maintenance
432	AVLB	Armoured Vehicle Launched Body
433	AVM	Air Vice-Marshal, Arteriovenous malformation
434	AVO	Apprehended Violence Order
435	AVP	Arubaanse Volkspartij
436	AVP	Association of Volleyball Professionals
437	AVRE	Armoured Vehicle Royal Engineers
438	AVTB	Armoured Vehicle Test Bed,Aviation Test Bed
439	AVUM	Aviation Unit Maintenance
440	AVVO	Acute Vaginal Venereal Outbreak
441	AW	Aruba (ISO 3166 digram)
442	aW	Attowatt
443	AWA	American Wrestling Association
444	AWC	Air Warfare Centre
445	AWD	All Wheel Drive
446	AWE	Advanced Warfighting Experiment
447	AWP	Awaiting Parts (SM&R code)
448	AWSIM	Air Warfare SIMulation
449	AWST	Australian Western Standard Time
450	AWW	Above Water Warfare
451	AX	Åland Islands (ISO 3166 digram)
452	AXP	Ambulance eXchange Point
453	AY	Antarctica (FIPS 10-4 territory code)
454	AYBABTU	All Your Base Are Belong To Us
455	AYU	As Yet Unknown
456	AZ	Arizona (postal symbol),Azerbaijan (ISO 3166 digram),Alkmaar Zaanstreek (Dutch football club)
457	AZE	Azerbaijan (ISO 3166 trigram)
458	AZUR	Actions en zone urbaine (French for: Urban Operations)
459	BAR	Barbados (IOC trigram,but not FIFA or ISO 3166),British American Racing,Browning Automatic Rifle,Buy-American Restrictions,BARD , Binational Agricultural Research and Development fund (between the US and Israel),BARDA , Biomedical Advanced Research and Development Agency,BART , Bay Area Rapid Transit,BAS , Battalion Aid Station,BASE , Building,Antenna,Span,Earth (parachute from),BASF , Badische Anilin und Soda Fabrik (Baden Aniline and Soda Factory,a German chemicals company),BASIC , Beginner's All-purpose Symbolic Instruction Code (acronym was added later,originally it was simply Basic),BAT , Basic Aid Training,BATF , U.S. Bureau of Alcohol,Tobacco,and Firearms,BATS , Behavior Analysis Training System ,Bradley Advanced Training System,BATTeRS , Bisei Asteroid Tracking Telescope for Rapid Survey,BB[edit]
460	BB	Barbados (ISO 3166 digram; FIPS 10-4 country code),Boys' Brigade (Christian youth organization),Brigitte Bardot (actress),Bumblebee
461	BBB	Better Business Bureau,Blood-brain barrier
462	BBC	Breeding Bird Census,British Broadcasting Corporation,Bumper to Back of Cab (trucking measurement)
463	BBL	Be Back Later,Bird Banding Laboratory,British Basketball League
464	BBN	Bolt,Beranek and Newman
465	BBQ	Barbecue
466	BBS	Breeding Bird Survey (North America),Brigade/Battalion Battle Simulation,Bulletin Board System,BBSRC , U.K. Biotechnology and Biological Sciences Research Council,BBVA , Banco Bilbao Vizcaya Argentaria (Spanish bank)
467	BBYO	B'nai B'rith Youth Organization
468	BC	Before Christ,Blind Copy (in emailers),Boston College,Botswana (FIPS 10-4 country code; from Bechuanaland),British Columbia (postal symbol)
469	BCA	Bachelor of Computer Application,Black Coaches & Administrators
470	BCC	Blind Carbon Copy
471	BCCI	Bank of Credit and Commerce International,Board of Control for Cricket in India,BCD , Binary-Coded Decimal
472	BEA	Banque extérieure d'Algérie,British European Airways (ancestor of British Airways),British Electricity Authority,bel
473	BEL	Belgium (ISO 3166 trigram)
474	BEN	Benin (ISO 3166 trigram)
475	BEO	Banquet Event Order
476	BERC	Business Environmental Resource Center
477	BER	Bit Error Rate
478	BH	Bahrain (ISO 3166 digram),Belize (FIPS 10-4 country code)
479	BHR	Bahrain (ISO 3166 trigram)
480	BNF	Backus-Naur Form (computing), British National Formulary
481	BNICE	Biological,Nuclear,Incendiary,Chemical,and Explosive Agents
482	BNP	British National Party,Banque Nationale de Paris,a predecessor to today's BNP Paribas
483	BNS	Bank of Nova Scotia
484	BNSF	Burlington Northern Santa Fe (also AAR reporting mark)
485	BO	Back Orifice,Belarus (FIPS 10-4 country code),Biarritz Olympique (French rugby union club),Bolivia (ISO 3166 digram),Body odor
486	BOAC	British Overseas Airways Corporation (predecessor of British Airways)
487	BoAML	Bank of America Merrill Lynch
488	BOC	British Orthodontic Society, British Oxygen Company
489	BÖC	Blue Öyster Cult
490	BODMAS	Brackets,Orders,Division,Multiplication,Addition,Subtraction
491	BOFH	Bastard Operator From Hell
492	BOGA	Bend Over and Grab Ankles
493	BOGOF	Buy One,Get One Free
494	BOGs	Bunch of Guys
495	BOI	Balance Of Investment,Basis Of Issue
496	BOL	Bolivia (ISO 3166 trigram)
497	BOM	Base Object Model,Bill Of Materials,Block of the Month quilting term,Business opportunity meeting
498	BOPD	Barrel of Oil Per Day
499	BOS	Battlefield Operating System
500	BOT	Balance of Trade,Botswana (IOC and FIFA trigram,but not ISO 3166),Build Operate Transfer,Bank of Thailand,BP[edit]
501	BP	Battle Position,British Petroleum (today,BP does not officially stand for anything),Solomon Islands (FIPS 10-4 country code; from British Protectorate of the Solomon Islands),Bp , Bishop,BPD , Bipolar Personality Disorder,BPM , Beats Per Minute,BPMo , Business Process Mobility
502	BPV	Battlefield Planning Visualization,Bovine papillomavirus
503	BQ	British Antarctic Territory (former ISO 3166 digram; merged with AQ in 1979),Caribbean Netherlands (current ISO 3166 digram; based on the entity's alternate name of Bonaire,Sint Eustatius and Saba),Navassa Island (FIPS 10-4 territory code)
504	BR	Brazil (ISO 3166 digram; FIPS 10-4 country code) ,Bihar (Indian state code),British Rail,Break Ranks (marching band term)
505	BRA	Brazil (ISO 3166 trigram)
506	BRAG	Bicycle Ride Across Georgia
507	BRASS	Breathe,Relax,Aim,Sight,Squeeze (acronym for using a rifle)
508	BSA	Birmingham Small Arms (motorcycles company),Boy Scouts of America,Brigade Support Area
509	BSatCoP	Benjamin Sniddlegrass and the Cauldron of Penguins
510	BSE	Bovine Spongiform Encephalopathy (better known as mad cow disease)
511	BSN	Baloncesto Superior Nacional (Spanish,'National Superior Basketball'; top Puerto Rican league),Bank Simpanan Nasional (Malay,'National Savings Bank'; government-owned Malaysian bank)
512	BSNL	Bharat Sanchar Nigam Limited,Bachelor of Science in Nursing
513	BSoD	Blue Screen of Death (distinct from BSD)
514	BSP	Between-Show Promotion,Binary Space Partitioning,Board Support Package,British Standard Pipe (screw thread),Business-sponsored,Bone sialoprotein
515	BST	Binary search tree,Blended Sales Tax,Bovine somatotropin,British Summer Time
516	BSW	British Standard Whitworth (screw thread)
517	BSX	Bendigo Stock Exchange
518	BT	Baal teshuva (Hebrew,'master of repentance') ,used to describe a Jew who adopts Orthodox Judaism as an adult,Bathythermograph,Bhutan (FIPS 10-4 country code; ISO 3166 digram),BitTorrent,British Telecom,the former name of the company now known as BT Group,BTDT , Been There,Done That,Bti , Bacillus thuringiensis israelensis,BTID , Battlefield Target Identification Device,BTIS , Battlefield Target Identification System
519	Bt	Baronet,Bacillus thuringiensis
520	BTO	Built To Order
521	BTP	British Transport Police
522	BTR	Bronetransporter (БТР = Бронетранспортер '(Heavy) Armoured (Personnel) Transporter')
523	BTU	British Thermal Unit
524	BTW	By The Way
525	BU	Bulgaria (FIPS 10-4 country code) -,Burma (ISO 3166 digram; obsolete since 1989)
526	BUAV	British Union for the Abolition of Vivisection
527	BUG-E	Battlefield Universal Gateway Equipment ('buggy')
528	BUNO	Bureau Number (aircraft serial number)
529	BUR	Burma (ISO 3166 trigram; obsolete since 1989)
530	BV	Background Vocals -,Battlefield Visualization ,,Bouvet Island (ISO 3166 digram; FIPS 10-4 territory code)
531	BVD	Bradley,Voorhees & Day (underwear manufacturer)
532	BVR	Beyond Visual Range
533	BVT	Bouvet Island (ISO 3166 trigram)
534	B&W	Babcock & Wilcox, Black and White, Bowers & Wilkins
535	BW	Bring Wedges (ISO digram)
536	BW	Botswana (ISO 3166 digram)
537	BWA	Botswana (ISO 3166 trigram)
538	BWARS	Bees,Wasps & Ants Recording Society
539	BWC	Biological and Toxin Weapons Convention
540	BWR	Boiling-Water Reactor
541	BX	Base eXchange
542	BY	Burundi (FIPS 10-4 country code), Belarus (ISO 3166 digram), Bavaria
543	BYOB	Bring Your Own Bottle (or beer, beverage, or booze) (multiple,but similar,meanings)
544	BYOC	Bring Your Own Computer (play on BYOB)
545	BYOF	Bring Your Own Flask
546	BYS	Byelorussian Soviet Socialist Republic (ISO 3166 trigram; obsolete since 1992)
547	BYU	Brigham Young University
548	BZ	Belize (ISO 3166 digram)
549	BZP	Benzylpiperazine
550	C	Carbon, Coulomb, One Hundred (in Roman numerals)
551	c	Centi
552	C2C	Consumer-To-Consumer electronic commerce, Cam-To-Cam internet chat
553	c2c	the British rail company formerly known as LTS Rail
554	Ca	Calcium
555	CA	California (postal symbol),Canada (FIPS 10-4 country code; ISO 3166 digram),Catalonia,Civil Affairs,Close Armour,Cocaine Anonymous,Computer Associates,Counter-Air,Cricket Australia
556	CAA	Canadian Automobile Association,(NORAD) Center for Aerospace Analysis,(U.S.) Center for Army Analysis,(U.S.) Clean Air Act,(U.S. Army) Concepts Analysis Agency,Civil Aviation Authority,Colonial Athletic Association
557	CAAT	Campaign Against Arms Trade,Center for Alternatives to Animal Testing
558	CAC	California Association of Criminalists,Chronic Asymptomatic [Disease] Carrier
559	CACM	Central American Common Market
560	CACM	Communications of the ACM
561	CADCAM	Computer-Aided Design/Computer-Aided Manufacturing
562	CADMID	Concept,Assessment,Demonstration,Manufacture,In service,Disposal (life cycle mnemonic)
563	CADPAT	CAnadian Disruptive PATtern
564	CAE	Canadian Aviation Electronics (originally),Certificate in Advanced English
565	CAEn	Close Action Engagement (constructive simulation)
566	CAF	Central African Republic (ISO 3166 trigram),Confederation of African Football (or French Confédération Africaine de Football)
567	CAFAD	Combined Arms For Air Defence
568	CAFDE	Canadian Association of Film Distributors and Exporters,Computer Aided Federation Development Environment
569	CAFE	Corporate Average Fuel Economy standard
570	CAI	Computer Assisted Instruction
571	CAIR	Council on American-Islamic Relations
572	CALABARZON	A region in the Philippines: CAvite,LAguna,BAtangas,Rizal,queZON
573	CALL	Center for Army Lessons Learned
574	CALM	Communications,Air-interface,Long and Medium range
575	CalPERS	California Public Employees' Retirement System
576	Caltrans	California Department of Transpotation
577	CAM	Chemical Agent Monitor,Complementary and alternative medicine,Computer-Aided Manufacturing,Crassulacean acid metabolism (type of photosynthesis)
578	CAMRA	CAMpaign for Real Ale
579	CAN	Canada (ISO 3166 trigram)
580	CANDU	CANada Deuterium Uranium (nuclear reactor design)
581	Canola	Canadian oil,low acid (referring to a specific cultivar of rapeseed bred to have a low erucic acid content)
582	CAPES	CAPability Evaluation System,Combined Arms Planning and Execution System
583	CARE	Citizens Association for Racial Equality (former New Zealand organisation),Community database on Accidents on the Roads in Europe,Cooperative for Aid and Relief Everywhere (originally Cooperative for American Remittances to Europe)
584	CARMONETTE	Computerized Monte Carlo Simulation
585	CARP	Computed Air Release Point
586	CART	Championship Auto Racing Teams (now defunct)
587	CAS	Chemical Abstracts Service,Chief of the Air Staff,Close Air Support
588	CASA	Civil Aviation Safety Authority
589	CASE	Cellular ammunition storage equipment,Computer-Aided Software Engineering
590	CASS	Command Activated Sonobuoy System
591	CASTFOREM	Combined Arms and Support Task FORce Evaluation Model
592	CASTOR	Canadian Automatic Small Telescopes for Orbital Research
593	CAT	Community Acceptance Testing
594	CATK	Counterattack
595	CATS	Computer Active Technology Suspension
596	CATT	Combined Arms Tactical Trainer
597	CAV	Cavalry
598	CAVOK	Ceiling And Visibility OK ('Kav-okay')
599	CAW	Canadian Auto Workers (trade union)
600	CB	Citizens' Band radio,Cambodia (FIPS 10-4 country code)
601	CBASSE	Commission on Behavioral And Social Sciences and Education ('sea bass')
602	CBC	Canadian Broadcasting Corporation,Christmas Bird Count,Cipher-Block Chaining,Cornering Brake Control
603	CBE	Commander of the Order of the British Empire,Cab Beside Engine (see truck)
604	CBF	Confederação Brasileira de Futebol (Portuguese,'Brazilian Football Confederation')
605	CBGB	Country,Blue Grass,and Blues (former New York City nightclub)
606	CBLA	Comparative bullet lead analysis
607	CBM	Canadian Baptist Ministries
608	CBM	Commodore Business Machines
609	CBML	Coalition Battle Management Language
610	CBN	CardsApp Brand Number
611	CBOL	Consortium for the Barcode of Life
612	CBOT	Chicago Board of Trade
613	CBR	Case-Based Reasoning
614	CBRN	Chemical,Biological,Radiological,or Nuclear (weapon or event)
615	CBRNE	Chemical,Biological,Radiological,Nuclear or [high-yield] Explosive (weapon or event)
616	CBS	Columbia Broadcasting System,Corps Battle Simulation
617	CBUS	Columbus,Ohio
618	CC	carbon copy
619	CCA	Counter Command Activity
620	CCC	Canterbury Clothing Company,Civilian Conservation Corps (U.S.,1930s and 1940s),Corpus Christi College,Oxford
621	CCCP	Central Committee of the Communist Party,Cyrillic for SSSR (Soyuz Sovetskikh Sotsialisticheskikh Respublik,Russian Союз Советских Социалистических Республик,Union of Soviet Socialist Republics)
622	CCD	Charge-Coupled Device,Confraternity of Christian Doctrine (Catechism)
623	CCF	Cartoon Cartoon Fridays
624	CCG	Canadian Coast Guard,Collectible Card Game
625	CCGC	Canadian Coast Guard Cutter,Canadian Coast Guard College
626	CCGH	Canadian Coast Guard Hovercraft
627	CCGS	Canadian Coast Guard Ship,Christ Church Grammar School
628	CCH	Computer-Controlled Hostile
629	CCIF	Comité consultatif international des communications téléphoniques à grande distance (French for International Telephone Consultative Committee,merged with the CCIT in 1956 to form the CCITT)
630	CCII	Command and Control Information Infrastructure,Community Capital Investment Initiative
631	CCIR	Comité consultatif international pour la radio (French for Consultative Committee on International Radio,became the ITU Radiocommunication Sector,ITU-R,in 1992),Commander's Critical Information Requirements
632	CCIT	Comité consultatif international télégraphique (French for International Telegraph Consultative Committee,merged with the CCIF in 1956 to form the CCITT)
633	CCITT	Comité consultatif international téléphonique et télégraphique (French for International Telegraph and Telephone Consultative Committee,became the ITU Telecommunication Standardization Sector,ITU-T,in 1992)
634	CCK	Cholecystokinin,Cocos (Keeling) Islands (ISO 3166 trigram)
635	CCM	Canada Cycle & Motor Co. Ltd. (now split into two separate companies bearing the CCM name,one manufacturing bicycles and the other ice hockey equipment),Contemporary Christian music
636	CCOC	Canadian Children's Opera Chorus,Crosley Car Owners Club
637	CCOP	Coalition Common Operating/Operational Picture
638	CCP	Casualty Collection Point,Communications Checkpoint,Contingency Communications Package
639	CCPA	Consumer Credit Protection Act
640	CCR	Creedence Clearwater Revival
641	CCRAp	Canadian Conservative Reform Alliance party
642	CCRP	Command and Control Research Program
643	CCRTS	Command and Control Research and Technology Symposium
644	CCSCS	Consultative Committee for Space Data Systems
645	CCSCS	Coordinadora de Centrales Sindicales del Cono Sur
646	CCSIL	Command and Control Simulation Interface Language ('cecil')
647	CCSK	Cyclic Code Shift Keying
648	CCT	Current Commitments Team
649	Cd	Cadmium
650	cd	Candela
651	CD	Compact Disc
652	CD1	Cluster of Differentiation 1 (a small gene family)
653	CDA	UK Centre for Defence Analysis
654	CDD	Capabilities Development Document
655	CDE	Chemical Defence Equipment
656	CDIAC	Carbon Dioxide Information Analysis Center ('see-dee-ack')
657	CDipAF	Certified Diploma in Accounting and Finance
658	CDL	Commercial driver's license
659	CDM	Clean Development Mechanism (Kyoto protocol), Cold Dark Matter (astronomy)
660	CDMA	Code Division Multiple Access
661	CDMSII	Cryogenic Dark Matter Search II
662	Cdr	Commander
663	CDT	Central Daylight Time (UTC−5 hours)
664	Cdt	Commandant
665	Ce	Cerium
666	CE	Christian/Common Era
667	CEA	Campaign Effectiveness Analysis
668	CECOM	U.S. Army Communications and Electronics Command
669	CEDEX	Courrier d'entreprise à distribution exceptionnelle (French,'Company Mail with Exceptional Distribution'; 'exceptional' refers to the volume of mail)
670	CEGEP	Collège d'enseignement général et professionnel (French,'College of General and Vocational Education')
671	CEI	Competitive Enterprise Institute
672	CENTCOM	United States Central Command
673	CENTO	Central Treaty Organization (Baghdad Pact)
674	CENZUB	Centre d'entraînement aux actions en zone urbaine (French,'Urban Operations Training Centre')
675	CEO	Chief Executive Officer
676	CEP	Circular Error Probable
677	CEPT	Conférence européenne des administrations des postes et des télécommunications (French,'European Conference of Postal and Telecommunications Administrations')
678	CERCLA	U.S. Comprehensive Environmental Response,Compensation,and Liability Act (Superfund)
679	CERDEC	U.S. Communications-Electronics Research,Development and Engineering Center
680	CERGA	Centre de recherches en géodynamique et astrométrie (French,'Astrometry and Geodynamics Research Centre')
681	CERN	Centre européen pour la recherche nucléaire (French,'European Organization for Nuclear Research')
682	CERT	Computer Emergency Response Team
683	CESS	Centre for Earth Science Studies (India)
684	CEST	Central European Summer Time
685	CET	Central European Time
686	CEWC	Council for Education in World Citizenship
687	Cf	Californium
688	CF	Canadian Forces,Central African Republic (ISO 3166 digram),Republic of the Congo (FIPS 10-4 country code)
689	CFA	Cat Fanciers' Association,Chartered Financial Analyst,Colour Filtering Array,County Fire Authority,Covering Force Area
690	CFAR	Christine's,Federal Acquisition Regulation
691	CFC	ChloroFluoroCarbon,Canadian Fish Company
692	CFES	Continuous Flow Electrophoresis System
693	CFFZ	Call For Fire Zone
694	CFG	Context-free grammar,Control flow graph
695	CFHT	Canada-France-Hawaii Telescope
696	CFI	Center for Inquiry (CSICOP)
697	CFL	Canadian Football League,Co-ordinated Fire Line
698	CFLCC	Coalition Forces Land Component Command
699	CFM	Certified Facilities Manager
700	CFO	Chief Financial Officer
701	CFP	Call for papers, College Football Playoff, Common Fisheries Policy (EU)
702	CFR	Code of Federal Regulations,Căile Ferate Române (Romanian,'Romanian Railways')
703	CFRP	Carbon fibre reinforced plastic
704	CFS	Chronic Fatigue Syndrome
705	CFSP	Common Foreign and Security Policy
706	CFU	Colony Forming Unit in Microbiology
707	CFV	Cavalry Fighting Vehicle
708	CFZ	Critical Friendly Zone
709	CG	Client Group,Computer Graphics,Controls Group,Democratic Republic of the Congo (FIPS 10-4 country code),Republic of the Congo (ISO 3166 digram)
710	CGH	Comparative Genomic Hybridisation
711	CGIG	Cross-Government Implementation Group
712	CGO	Republic of the Congo (IOC and FIFA trigram,but not ISO 3166)
713	CGS	Chief of the General Staff
714	CGT	Capital Gains Tax
715	ch	ch(L) is used to denote the Chern character of a line bundle
716	CH	Chieftain tank,China (FIPS 10-4 country code),Switzerland (ISO 3166 digram; from Latin Confoederatio Helvetica)
717	CHAMPUS	(U.S.) Civilian Health and Medical Program of the Uniformed Services (now known as TRICARE)
718	CHAOS	Cambridge Heart Anti-Oxidant Study
719	CHAPS	Clearing House Automated Payment System
720	CHDK	Canon Hack Development Kit (Canon camera firmware hack)
721	CHE	Switzerland (ISO 3166 trigram; from Latin Confoederatio Helvetica)
722	CHI	Columbia Helicopters,Inc
723	CHiP	California Highway Patrol
724	CHIPS	Cosmic Hot Interstellar Plasma Spectrometer
725	CHL	Chile (ISO 3166 trigram)
726	CHLA	Core Historical Literature of Agriculture
727	CHN	China (ISO 3166 trigram)
728	CHOGM	Commonwealth Heads of Government Meeting
729	CHPSO	California Hospital Patient Safety Organization
730	CHRS	Canadian Heart Rhythm Society
731	CHT	Certified Hand Therapist
732	CI	Chile (FIPS 10-4 country code),Côte d'Ivoire (ISO 3166 digram),Counter-Intelligence,101 (in Roman numerals)
733	Ci	Curie
734	CIA	Cairo International Airport,Central Intelligence Agency,Culinary Institute of America
735	CIAO	Critical Infrastructure Assurance Office,Component-Integrated ACE ORB
736	CIB	Complete In Box (Internet auction/trading listings)
737	CIBC	Canadian Imperial Bank of Commerce
738	CICS	Customer Information Control System (IBM mainframe software; 'kicks' or 'C-I-C-S')
739	CID	Certified Interior Designer
740	CIEF	Comité international d'enregistrement des fréquences (International Frequency Registration Board)
741	CIF	Cost,Insurance,and Freight (Paid) (shipping)
742	CIMMYT	Centro Internacional de Mejoramiento de Maíz Y Trigo (Spanish,'International Maize and Wheat Improvement Center')
743	CINC	Commander in Chief
744	CINEOS	Campo Imperatore Near-Earth Object Survey
745	CIO	Chief information officer,Congress of Industrial Organizations
746	CIPE	(European) Centre for International Political Economy
747	CIR	(Commander's) Critical Information Requirements
748	CIR	Corotating Interaction Region
749	CIS	Canadian Interuniversity Sport,Commonwealth of Independent States,Command and Information System,Communication and Information System
750	CISA	(U.S.) C4I Integration Support Activity
751	CISB	Complete In Sealed Box (Internet auction/trading listings)
752	CISPR	Comité international spécial des perturbations radioélectriques (Special International Committee on Radio Interference)
753	CISSP	Certified Information Systems Security Professional
754	CITES	Convention on International Trade in Endangered Species (of Wild Fauna and Flora) ('sigh-tease')
755	CIV	Côte d'Ivoire (ISO 3166 trigram)
756	CIVETS	Colombia,Indonesia,Vietnam,Egypt,Turkey,South Africa (economics)
757	CIVPOP	Civilian Population
758	CIWS	Close-In Weapon System
759	CJ	Cayman Islands (FIPS 10-4 country code),Criminal Justice
760	CJC	Canadian Jewish Congress,Cold Junction Compensation
761	CJCS	Chairman of the Joint Chiefs of Staff
762	CJD	Chronological Julian Day,Creutzfeldt-Jakob Disease
763	CJO	Chief of Joint Operations
764	CJTF	Combined Joint Task Force
765	CK	Cocos (Keeling) Islands (FIPS 10-4 country code),Cook Islands (ISO 3166 digram)
766	CKA	commonly known as, Canada Kicks Ass
767	CKND	Codename: Kids Next Door
768	CL	Chile (ISO 3166 digram),Co-ordination Line,One Hundred and Fifty (in Roman numerals)
769	Cl	Chlorine
770	CLA	Clutterers Anonymous
771	CLEC	Competitive Local Exchange Carrier
772	CLEMARS	California Law Enforcement Mutual Aid Radio System
773	CLIC	Compact LInear Collider
774	CLO	Cornell Lab of Ornithology
775	CLOS	Command to Line-Of-Sight (missile control system)
776	CLPFC	CentroLateral PreFrontal Cortex
777	CLRP	College Loan Repayment Program
778	CM	Cameroon (FIPS 10-4 country code; ISO 3166 digram),Cruise Missile,Nine Hundred (in Roman numerals)
779	Cm	Curium
780	CMA	U.S. Chemical Materials Agency,Country Music Association (also used to refer to the organization's annual awards),Crystal Meth Anonymous
781	CMHC	Canada Mortgage and Housing Corporation
782	CMIIAW	Correct me if I am wrong
783	CMIS	Common management information service
784	CMJ	Christopher Martin-Jenkins (BBC sports commentator)
785	CMLL	Consejo Mundial de Lucha Libre (Spanish,'Worldwide Wrestling Council'—Mexican professional wrestling promotion)
786	CMM	Capability Maturity Model
787	CMMC	Corps Materiel Management Centre
788	CMML	Chronic MyeloMonocytic Leukemia,Continuous Media Markup Language
789	CMOS	Canadian Meteorological and Oceanographic Society,(The) Chicago Manual of Style,Complementary Metal Oxide Semiconductor
790	CMP	Common [Operating/Operational] Maritime Picture
791	CMPD	Charlotte Mecklenburg Police Department
792	CMPD	Chronic Myeloproliferative Disease
793	CMR	Cameroon (ISO 3166 trigram),Coaxial Main Rotors (helicopter type)
794	CMS	Centers for Medicare and Medicaid Services,The Chicago Manual of Style
795	CMT	Country Music Television
796	CMU	Carnegie Mellon University,Central Michigan University,Concrete Masonry Unit
797	CMW	Marconi's Wireless Telegraph Company of Canada,Canadian Manufacturing Week,Canadian Music Week,Catherine McAuley Westmead (school in New South Wales,Australia),Chicago,Missouri and Western (Railway),Compartmented Mode Workstation,Compton's Most Wanted,Continuous Microwave (processing technology),Custom Maintenance Wizard (Microsoft Office Resource Kit)
798	CMYK	Cyan Magenta Yellow Key/blacK (colour model)
799	CN	Canadian National (railway; also the AAR reporting mark for said company),China (ISO 3166 digram),Comoros (FIPS 10-4 country code)
800	CNA	Center for Naval Analyses,Certified Network Administrator,Computer Network Attack,Continental (Casualty Company),National (Fire Insurance Company),and American (Casualty Company),the three companies that merged to form what is now known as CNA Financial
801	CNBC	Consumer News and Business Channel
802	CND	Campaign for Nuclear Disarmament,Computer Network Defence
803	CNE	Canadian National Exhibition,Computer Network Exploitation,Certified Network Engineer
804	CNF	Cost and Freight
805	CNI	Clinical Nursing Intern
806	CNI	Communications,Navigation and Identification
807	CNN	Cable News Network,Cellular Nonlinear Network
808	CNV	Copy-Number Variable (genetics)
809	Co	Cobalt
810	COB	Close Of Business [day]
811	COBRA	Consolidated Omnibus Budget Reconciliation Act of 1985
812	COD	Cash On Delivery,Democratic Republic of the Congo (ISO 3166 trigram)
813	CoDA	Co-Dependents Anonymous
814	COGENT	Cognitive Objects within a Graphical EnviroNmenT
815	COIL	Chemical Oxygen Iodine Laser
816	COK	Cook Islands (ISO 3166 trigram)
817	COL	Colombia (ISO 3166 trigram)
818	COLA	Cost Of Living Adjustment
819	CONAD	U.S. Continental Air Defense Command
820	CONUS	Continental United States
821	COO	Chief Operating Officer
822	COPE	U.K. Committee On Publication Ethics
823	COPUS	U.K. Committee on the Public Understanding of Science
824	CORD	Common Operational Requirements Document
825	CORE	Consortium for Oceanographic Research and Education
826	COS	Cooper Ornithological Society
827	COSER	COoperative SERvice
828	CoT	Car of Tomorrow (former NASCAR race car design)
829	COTS	Commercial Off The Shelf
830	CP	Canadian Pacific,Check Point,Command Post,Club Penguin
831	CPA	Certified Public Accountant
832	CPCU	Certified Property Casualty Underwriter
833	CPD	Capabilities Production Document
834	CPE	Certificate of Proficiency in English
835	CPE	Certified Professional Ergonomist
836	CPF	Calibration Parameter File,Canadian Patrol Frigate
837	CPG	Clinical Practice Guideline
838	CPIM	Certification on Production and Inventory Management
839	CPIR	Computationally-Private Information Retrieval
840	CPON	Certified Pediatric Oncology Nurse
841	CPPCC	Chinese People's Political Consultative Conference
842	CPR	Canadian Pacific Railway
843	CPR	Cardiopulmonary resuscitation
844	CPSM	Continuous Phase Shift Modulation
845	CPSU	Communist Party of the Soviet Union
846	CPT	Contingency Planning Team
847	CPU	Contract Postal Unit
848	CPV	Cape Verde (ISO 3166 trigram)
849	CPX	Command Post eXercise
850	CQ	Carrier Qualification,Central Queensland,Charge of Quarters,Congressional Quarterly,Constellation Airlines (IATA airline designator),Northern Mariana Islands (FIPS 10-4 territory code)
851	Cr	Chromium
852	CR	Coral Sea Islands (FIPS 10-4 territory code),Costa Rica (ISO 3166 digram)
853	CRAM	Combined Radiometric Correction Model
854	CRD	Capstone Requirements Document
855	CREB	Cyclic AMP-response Element Binding (protein)
856	CREEP	Committee for the Re-Election of the President,a pejorative nickname used by opponents
857	CREN	Christian Real Estate Network Real Estate Association
858	CRI	China Radio International,Costa Rica (ISO 3166 trigram)
859	CRIPL	Consolidated Remain-In-Place List
860	CRM	Cardiac Rhythm Management,Customer Relationship Management
861	CRO	Croatia (IOC and FIFA trigram,but not ISO 3166)
862	CRP	Committee for the Re-Election of the President,Control and Reporting Post
863	CRT	Cardiac Resynchronization Therapy,Cathode Ray Tube,Chinese Remainder Theorem
864	CRTC	Canadian Radio-television and Telecommunications Commission
865	Cs	Caesium
866	CSA	Canadian Soccer Association,Canadian Space Agency,Canadian Standards Association,Child Support Agency,Command Staff Advisor,Community-supported agriculture,Confederate States of America,Corps Storage Area,Czech Airlines,C/S/A,CINC,Service,and Agency
867	CSC	Closed Spacelike Curve (relativity),Compact system camera,Computer Sciences Corporation,Computer Security Centre,CSCC Canadian Society of Clinical Chemists
868	CSERIAC	(U.S. DoD) Crew Systems Ergonomics Information Analysis Center
869	CSG	Corps Support Group
870	CSI	see entry
871	CSICOP	Committee for the Scientific Investigation of Claims of the Paranormal (became the Committee for Skeptical Inquiry in 2006)
872	CSIP	Commercial Stable Image Platform (AMD)
873	CSK	Czechoslovakia (ISO 3166 trigram; obsolete since 1993)
874	CSL	U.K. Central Science Laboratory
875	CSPI	Center for Science in the Public Interest
876	CSR	Control Supply Rate
877	CSR	Corporate Social Responsibility
878	CSRC	Conflict Studies Research Centre
879	CSRF	Cross-Site Request Forgery
880	CST	Central Standard Time (UTC−6 hours)
881	CT	Computed tomography (medical scan also known as a CAT scan),Central Time zone,Chrono Trigger (Computer/Video games),Connecticut (postal symbol),Canterbury (postal symbol),Chhattisgarh (Indian state code)
882	CTBT	Comprehensive [Nuclear] Test Ban Treaty
883	CTDB	Compact Terrain Data Base (file format)
884	CTGF	connective tissue growth factor
885	CTI	Co-operative Target Identification
886	CTIL	Critical Tracked Items List
887	CTIS	Central Tire Inflation System
888	CTMS	Clinical Trial Management System
889	CTSS	Compatible Time-Sharing System
890	CTU	Counter Terrorist Unit (fictional branch of the Central Intelligence Agency in the television action series 24)
891	CTVT	Canine Transmissible Venereal Tumour
892	Cu	Copper (Latin Cuprum)
893	CUB	Cuba (ISO 3166 trigram)
894	CUCV	Commercial Utility Cargo Vehicle
895	CUPS	Common Unix Printing System
896	CUPW	Canadian Union of Postal Workers
897	CUREA	Consortium for Undergraduate Research and Education in Astronomy
898	CuW	Copper-tungsten pseudo-alloy (from the chemical symbols of the two component elements)
899	CUW	Curaçao (ISO 3166 trigram)
900	CV	curriculum vitae (résumé)
901	CVLL	Crypto Variable Logic Label
902	CVSD	Continuous Variable Slope Delta (modulation)
903	CVT	Continuously Variable Transmission
904	CW	Calendar Week, or: Continuous Wave, or: Clothes Washer, or: Cook Islands (FIPS 10-4 territory code)
905	CWC	Chemical Weapons Convention
906	CWRU	Case Western Reserve University
907	CWS	Canadian Wildlife Service
908	CX	Christmas Island (ISO 3166 digram),or: One Hundred and Ten (in Roman numerals)
909	CXR	Christmas Island (ISO 3166 trigram)
910	CY	Calendar year, or: Cyprus (ISO 3166 and FIPS 10-4 country code digram)
911	CYM	Cayman Islands (ISO 3166 trigram)
912	CZE	Czech Republic (ISO 3166 trigram)
913	CZF	(Christian Zombie Fan)
914	CZMA	(US) Coastal Zone Management Act
915	d	Deci
916	D	Deuterium
917	DAFIF	Digital Aeronautical Flight Information File
918	DAK	Disney's Animal Kingdom
919	DAO	Division Ammunition Officer
920	DARE	Drug Abuse Resistance Education
921	DARO	(U.S.) Defense Airborne Reconnaissance Office
922	DARPA	U.S. Defense Advanced Research Projects Agency
923	DAS	Defensive Aids Suite
924	DASD	(U.S.) Deputy Assistant Secretary of Defense
925	DASL	Datapoint's Advanced Systems Language
926	DAU	(U.S.) Defense Acquisition University
927	DAWN	(U.S.) Drug Abuse Warning Network
928	dB	Decibel
929	DB	Deutsche Bahn
930	Db	Dubnium
931	DBA	De Bellis Antiquitatis (miniature wargaming rules)
932	DBBL	(U.S. Army Simulation Center) Dismounted Battlespace Battle Laboratory
933	DBDO	Desert BDO
934	DBE	Dame Commander of the Order of the British Empire
935	DBF	Detection By Fire (weapon launch signature)
936	DBR	De Bellis Renationis (miniature wargaming rules)
937	DBRA	Davis-Bacon Related Acts
938	DBS	Direct Broadcast Services (television)
939	DCAA	(U.S.) Defense Contract Audit Agency
940	DCAS	Devon and Cornwall Archery Society
941	DCC	Dallas Christian College
942	DCD	[Organ] Donation after Cardiac Death
943	DCE	Data Communication Equipment
944	DCFC	Death Cab for Cutie
945	DCL	Disney Cruise Line
946	DCN	Deacon
947	DCOM	Disney Channel Original Movie
948	DCSOPS	Deputy Chief of Staff for Operations and plans
949	DCW	Digital Chart of the World
950	DCYSC	Discovery Channel Young Scientist Challenge
951	DD	due diligence and dear daughter (increasingly prevalent on social mailing lists,blogs,and bulletin boards)
952	DDA	Deputy District Attorney
953	DDN	U.S. Defense Data Network
954	DDS	Doctor of Dental Surgery
955	DEA	Drug Enforcement Administration
956	DEA	Drug Enforcement Agency
957	DeCA	(U.S.) Defense Commissary Agency
958	DEFCON	Defence readiness condition
959	DELT	Dual Ended Line Test (ing)
960	DEPSECDEF	(U.S.) Deputy Secretary of Defense
961	DERA	British Defence Evaluation and Research Agency (1995-2001)
962	DES	Deep Ecliptic Survey
963	DEU	Germany (ISO 3166 trigram)
964	DFAS	(U.S.) Defense Finance and Accounting Service
965	DFCB	Data Format Control Book
966	DfID	UK Department for International Development
967	DFM	Discrete Field Model see Superluminal motion
968	DFM	Dynamic Flowgraph Methodology
969	DFSP	Dermatofibrosarcoma protuberans
970	DfT	UK Department for Transport
971	DGPS	Differential GPS
972	DGZ	Desired Ground Zero
973	DHA	DocosaHexaenoic Acid
974	DHHS	(U.S.) Department of Health and Human Services
975	DHRA	(U.S.) DoD Human Resources Activity
976	DHS	U.S. Department of Homeland Security
977	DHSS	UK Department of Health and Social Security
978	DHTFYSS	U.S. Don't Have Time For You Silly S****
979	DHY	Dahomey (ISO 3166 trigram; became BEN for Benin in 1977)
980	DIA	U.S. Defense Intelligence Agency
981	DIAC	Department of Immigration and Citizenship (Australia) [1]
982	DiC	Design Island Centre (computing usually used in a teaching situation)
983	DICASS	DIrectional Command Activated Sonobuoy System
984	DIFAR	DIrectional Frequency Analysis and Recording
985	DIME	Dense Inert Metal Explosive
986	DIP	Dual In-line Package (electronics)
987	DIPS	Defense independent pitching statistics
988	DIR	Defence Industrial Research
989	DISCOM	Division Support Command
990	DISE	Deployable Intelligence Support Element
991	DISSTAF	DIS Search and Target Acquisition Fidelity experiment
992	DITY	Do-It-Yourself
993	DIVAD	Division Air Defence
994	DIY	Do It Yourself
995	DJI	Djibouti (ISO 3166 trigram)
996	DK	Denmark (ISO 3166 digram)
997	DL	Dexter's Laboratory
998	DLIC	Detachment Left-In-Contact
999	DLIR	Depot-Level Inspection and Repair
1000	DLPMC	DorsoLateral PreMotor Cortex
1001	DLRP	Data Link Reference Point
1002	DLS	Deep Lens Survey
1003	DLSA	(U.S.) Defense Legal Services Agency
1004	DLSc	Diploma in Library Science
1005	DLTBGYD	Don't let the bastards grind you down
1006	DMC	(U.S.) Defense Management Council
1007	DMCA	Digital Millennium Copyright Act
1008	DMM	Digital Multimeter
1009	DMOC	Distributed Mission Operations Centre
1010	DMPA	(U.S.) Defense Medical Programs Activity
1011	DMPFC	DorsoMedial PreFrontal Cortex
1012	DMPK	Drug Metabolism and Pharmacokinetics
1013	DMRB	Design Manual for Roads and Bridges
1014	DMS	U.S. Defense Message System
1015	DMSP	U.S. Defense Meteorological Satellite Program
1016	DMT	Dimethyltryptamine
1017	DMV	Department of Motor Vehicles
1018	DMZ	DeMilitarized Zone
1019	DN	Deacon
1020	DNAW	Day Night All Weather
1021	DNDi	Drugs for Neglected Diseases initiative
1022	DNDO	U.S. Domestic Nuclear Detection Office
1023	DNK	Denmark (ISO 3166 trigram)
1024	DNM	Defence Nuclear Material
1025	DNR	Do Not Resuscitate
1026	DNS	Domain Name System
1027	DOB	Date Of Birth
1028	DOD	U.S. Department of Defense
1029	DODAF	U.S. Department of Defense Architectural Framework
1030	DoDD	U.S. Department of Defense Directive
1031	DoDEA	(U.S.) Department of Defense Education Activity
1032	DOE	U.S. Department of Energy
1033	DOHC	Dual-OverHead-Cam engine
1034	DOI	U.S. Department of the Interior
1035	DORA	Defence of the Realm Act
1036	DOS	Density of State
1037	DOTA	short-form for DEFENSE OF THE ANCIENTS a popular online epic game
1038	DotD	Deal of the Day (marketing gimmick)
1039	DOW	Died of Wounds
1040	DP	Division de production (Algerian petroleum company)
1041	DPA	UK Defence Procurement Agency
1042	DPCO	Double-Pole Change Over
1043	DPDT	Double-Pole Double-Throw
1044	DPI	Dots Per Inch
1045	DPICM	Dual-Purpose Improved Conventional Munition
1046	DPKO	UN Department for Peacekeeping Operations
1047	DPMO	(U.S.) Defense Prisoner of War/Missing Personnel Office
1048	DPPDB	Digital Point Positioning Database
1049	DPRK	Democratic People's Republic of Korea
1050	DPST	Double-Pole Single-Throw
1051	DRC	Democratic Republic of the Congo
1052	DRDC	Defence Research & Development Canada
1053	DREA	Defence Research Establishment Atlantic (obsolete 2002)
1054	DRES	Defence Research Establishment Suffield (obsolete 2002)
1055	DRET	Defence Research Establishment Toronto (obsolete 2002)
1056	DREV	Defence Research Establishment Valcartier (obsolete 2002)
1057	DRIC	(U.S.) Defense Research Information Center
1058	DRMS	(U.S.) Defense Revitalization and Marketing Service
1059	DRPR	Drawing Practices
1060	DRT	Document Related Technologies
1061	Ds	Darmstadtium
1062	DSAS	Disney Sing Along Songs
1063	DSB	(U.S.) Defense Science Board
1064	DSCS	U.S. Defense Satellite Communications System
1065	DSCSOC	DSCS Operations Center
1066	DSE	Dry Sheep Equivalent
1067	DSG	Direct-Shift Gearbox
1068	DSID	Dismounted Soldier Identification System
1069	DSL	Digital Subscriber Line
1070	DSLR	Digital single-lens reflex (camera)
1071	DSM	Diagnostic and Statistical Manual of Mental Disorders
1072	DSN	Deep Space Network
1073	DSPL	Design Specialists and Plans Language
1074	DSR	Deformed Special Relativity
1075	DST	Daylight Saving Time
1076	DSTL	British Defence Science and Technology Laboratory
1077	DSWA	(U.S.) Defense Special Weapons Agency
1078	DTA	Dental Technologists Association
1079	DTD	Digital Terrain Data
1080	DTG	Date-Time Group
1081	DTH	Direct To Home (television)
1082	DTI	UK Department of Trade and Industry
1083	DTIC	(U.S.) Defense Technical Information Center
1084	DTL	Diode-Transistor Logic (electronics)
1085	DTMF	Dual-tone multi-frequency signaling
1086	DTO	Disruptive Technology Office (was ARDA)
1087	DTR	Determine The Relationship
1088	DTSA	(U.S.) Defense Technology Security Administration
1089	DUMBO	Down Under the Manhattan Bridge Overpass (Brooklyn neighborhood)
1090	DUSD	(U.S.) Deputy Under-Secretary of Defense
1091	DVLC	UK Driver and Vehicle Licencing Centre
1092	DVM	Doctor of Veterinary Medicine
1093	DVO	Direct View Optics
1094	DVOM	Digital Volt-Ohm Meter
1095	DVP	various meanings (disambiguation page)
1096	DW	Drum Workshop
1097	DWIM	Do What I Mean
1098	DWM	Doctor Who Magazine
1099	DWTS	Dancing with the Stars
1100	DWW	Down with Webster
1101	DXA	Dual-energy X-ray Absorptiometry
1102	DXM	DeXtroMethorphan
1103	DY	Dahomey (ISO 3166 digram; obsolete since 1977)
1104	Dy	Dysprosium
1105	DZA	Algeria (ISO 3166 trigram)
1106	E	East
1107	EABU	Explain Acronyms Before Use
1108	EAC	Echelons Above Corps
1109	EAPC	Euro-Atlantic Partnership Council
1110	EAST	Experimental Advanced Superconducting Tokamak
1111	EBD	Electronic Brake Distribution
1112	EBE	Extraterrestrial Biological Entity
1113	EBSA	Employee Benefits Security Administration
1114	EBW	Electron Beam Welding
1115	EBW	Exploding BridgeWire
1116	ECASS	European Centre for Analysis in the Social Sciences [1]
1117	ECBR	European Coalition for Biomedical Research
1118	ECCM	Electronic Counter-Counter-Measures
1119	ECFS	Electronic Case Filing System
1120	ECG	Electrocardiogram
1121	ECHR	European Convention on Human Rights
1122	ECJ	European Court of Justice
1123	ECL	Emitter Coupled Logic (electronics)
1124	ECommHR	European Commission on Human Rights
1125	ECSC	European Coal and Steel Community (distant ancestor of the EU)
1126	ECT	ElectroConvulsive Therapy
1127	ECtHR	European Court of Human Rights
1128	EDA	European Defence Agency
1129	EDAC	Error Detection And Correction
1130	EDCS	Environmental Data Coding Specification
1131	EDH	Eastman Dental Hospital
1132	EDSA	Epifanio de los Santos Avenue (a major thoroughfare in Manila with great significance to post-1980 Philippines history)
1133	EDT	Eastern Daylight Saving Time (UTC−4 hours)
1134	EEC	European Economic Community (predecessor of the EU)
1135	EEG	ElectroEncephaloGram
1136	EENT	End Evening Nautical Twilight
1137	EEO	Equal Employment Opportunity
1138	EEOC	(U.S.) Equal Employment Opportunity Commission
1139	EEZ	Economic Exclusion Zone or Exclusive Economic Zone
1140	EFF	Electronic Frontier Foundation
1141	EFL	English as a Foreign Language
1142	EFM	Enterprise Feedback Management
1143	EFOA	European Fuel Oxygenates Association
1144	EFSA	European Food Safety Authority
1145	EFT	Electronic Fund Transfer
1146	EFV	Expeditionary Fighting Vehicle
1147	EG	Egypt (ISO 3166 digram; FIPS 10-4 country code)
1148	EGCG	EpiGalloCatechin-3-Gallate
1149	EGIS	Erieye Ground Interface Segment
1150	EGRET	Energetic Gamma-Ray Experiment Telescope
1151	EGY	Egypt (ISO 3166 trigram)
1152	EHF	Extremely High Frequency
1153	EHR	Equipment History Record
1154	Ei	Exbi
1155	EI	Ireland (FIPS 10-4 country code; from Éire)
1156	EIA	Environmental Impact Assessment
1157	EIAH	Encyclopedia of Iranian Architectural History
1158	EIAH	Environnements Informatiques pour l'Apprentissage Humain
1159	EIC	East India Company
1160	EICS	East India Company's Service
1161	eID	electronic ID
1162	EIRP	Effective Isotropic Radiated Power
1163	EIS	Environmental Impact Statement
1164	EJ	Exajoule
1165	EKG	Electrocardiogram (from German Elektrokardiogramm)
1166	EKMS	Electronic Key Management System
1167	EL	Exalitre
1168	ELINT	Electronic Intelligence
1169	ELL	English Language Learner
1170	ELM	Edge-Localised Mode (plasma physics)
1171	ELO	Electric Light Orchestra
1172	ELSS	Emergency Life Support Stores
1173	EM	ElectroMagnetism/ElectroMagnetic
1174	Em	Exametre
1175	EMA	European Medicines Agency
1176	EMCON	(Electromagnetic) Emissions Control
1177	EMDG	Euro-Missile Dynamics Group
1178	EMDR	Eye Movement Desensitisation and Reprocessing
1179	EMEA	Europe,Middle East and Africa
1180	EMG	ElectroMyoGraph
1181	EMP	ElectroMagnetic Pulse
1182	EMS	Emergency Medical Services
1183	EMT	Emergency Medical Technician
1184	ENCODE	Encyclopedia of DNA Elements (human genome data project)
1185	ENE	East North-East
1186	ENG	England (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
1187	ENTEC	Euro NATO Training Engineer Centre
1188	ENVL	Envelope
1189	ENY	Enemy
1190	EOD	Explosive Ordnance Disposal
1191	EOG	ElectroOculoGraphy
1192	EOM	End of Message
1193	EOSAT	Earth Observation Satellite
1194	EOSDIS	Earth Observation Satellite Data and Information System
1195	EP	European Parliament
1196	EP	Extended play
1197	EPCOT	Experimental Prototype Community Of Tomorrow
1198	EPGS	EOS Polar Ground Sites
1199	EPIRB	Emergency Position Indicating Radio Beacon
1200	EPL	English Premier League
1201	EPOS	Electronic Point Of Sale
1202	EPPA	Employee Polygraph Protection Act
1203	EPR	European Pressurised [Nuclear] Reactor
1204	EQ	Emotional Quotient
1205	Er	Erbium
1206	ERCIM	European Research Consortium for Informatics and Mathematics
1207	ERI	Eritrea (ISO 3166 trigram)
1208	ERLAWS	Eastern Ruapehu Lahar Alarm and Warning System
1209	EROS	Earth Resources Observation System
1210	ERP	Engineer Regulating Point
1211	ERR	Eesti Rahvusringhääling
1212	ERS	Earth Resources Survey
1213	ERTS	Earth Resources Technology Satellite (became Landsat)
1214	ERV	Endogenous RetroVirus
1215	ESD	ElectroStatic Discharge
1216	ESDP	European Security and Defence Policy
1217	ESE	East South-East
1218	ESH	Western Sahara (ISO 3166 trigram)
1219	ESL	English as a Second Language
1220	ESM	Electronic warfare Support Measures
1221	ESO	European Southern Observatory
1222	ESOL	English for Speakers of Other Languages
1223	ESPN	Entertainment and Sports Programming Network
1224	ESU	Emergency Services Unit
1225	ESV	Engineer Support Vehicle
1226	ET	Ethiopia (ISO 3166 digram; FIPS 10-4 country code)
1227	ETH	Ethiopia (ISO 3166 trigram)
1228	ETI	Extra-Terrestrial Intelligence
1229	ETLA	Extended TLA
1230	ETT	Embedded Training Team
1231	Eu	Europium
1232	EUCOM	(U.S.) European Command
1233	EUUSA	European Union and United States of America
1234	EV	Exavolt
1235	EVIL	Electronic viewfinder (with) interchangeable lens (a type of digital camera)
1236	EWTN	Eternal Word Television Network
1237	Exatesla	Extra Terrestrial
1238	EXREP	Expeditious Repair (SM&R code)
1239	f	Femto
1240	fA	Femtoampere
1241	FA	Food Addicts in Recovery Anonymous
1242	FAA	Financial Aid Administrator,Fleet Air Arm,Functional Area Analysis
1243	FAAD	Forward Area Air Defence
1244	FAADEZ	Forward Area Air Defence Engagement Zone
1245	FAAFP	Fellow of the American Academy of Family Physicians
1246	FAAN	Fellow of the American Academy of Neurology
1247	FAAN	Fellow of the American Academy of Nursing
1248	FAAQ	Frequently Asked and Anticipated Questions
1249	FAASV	Field Artillery Ammunition Supply Vehicle
1250	FAB	Feline Advisory Bureau (UK feline charity)
1251	FACA	(US) Federal Advisory Committee Act
1252	FACH	Fuerza Aérea de Chile
1253	FACN	Fellow of the American College of Nutrition
1254	FACP	Fellow of the American College of Physicians
1255	FACTS	Flexible Alternating Current Transmission System
1256	FAM	Foreign Affairs Manual
1257	FAO	Food and Agriculture Organization
1258	FAPA	Fellow of the American Psychological Association
1259	FAPHA	Fellow of the American Public Health Association
1260	FARP	Forward Arming and Refuelling Point / Forward Area Rearm/refuel Point
1261	FASCAM	Family of Scatterable Mines[1]
1262	FASD	Fetal Alcohol Spectrum Disorder
1263	FASEB	Federation of American Societies for Experimental Biology
1264	FAT	Field Artillery Tractor
1265	FAVS	Future Armoured Vehicle System
1266	FAW	Football Association of Wales
1267	FBCS	Fellow of the British Computer Society
1268	FBIDST	Fellow of the British Institute of Dental and Surgical Technologists
1269	FBIS	Foreign Broadcast Information Service
1270	FBM	Board foot
1271	fC	Femtocoulomb
1272	FCC	U.S. Federal Communications Commission
1273	FCE	First Certificate in English
1274	FCF	Financial Free Cash Flow
1275	FCLA	Fraud Claims Law Associate
1276	FCO	UK Foreign and Commonwealth Office
1277	FCW	Florida Championship Wrestling
1278	FD	Falun Dafa
1279	FDA	Food and Drug Administration (U.S.)
1280	FDBK	(I) Feedback
1281	Fe	Iron (Latin Ferrum)
1282	FEAST	Forum for European-Australian Science and Technology Cooperation
1283	FEATS	Festival of European Anglophone Theatrical Societies link title
1284	FEBA	Forward Edge of the Battle Area
1285	FED	Field Emission Display
1286	FEDEP	Federation Development Process (Simulation)
1287	FEF	Frontal Eye Field (neurophysiology)
1288	FEMA	Farm Equipment Manufacturers Association, U.S. Federal Emergency Management Agency,Fire Equipment Manufacturers' Association
1289	FENS	Federation of European Neuroscience Societies
1290	FES	Flywheel Energy Storage
1291	FEST	Frankfurt English Speaking Theatre link title
1292	FET	Field-effect transistor
1293	FEZ	Fighter Engagement Zone
1294	fF	Femtofarad
1295	FF	Final Fantasy
1296	FFB	Frum From Birth (referring to an observant Jew born into a religiously observant family)
1297	FFC	Free For Chat
1298	FFE	Fukuoka Futures Exchange
1299	FFF	Fédération française de football (French for: French Football Federation)
1300	FFG	Guided Missile Frigate (hull classification symbol)
1301	FFOV	Forward Field Of View
1302	FFR	Fédération française de rugby (French for: French Rugby (Union) Federation)
1303	FFS	For Fuck's Sake
1304	FFT	Final Fantasy Tactics
1305	FG	Falun Gong
1306	fg	Femtogram
1307	FG	Fog (METAR Code), French Guiana (FIPS 10-4 territory code)
1308	FGOTUS	First Gentleman of the United States
1309	FGR	Flickr Group Roulette
1310	fH	Femtohenry
1311	FHFIF	Foster's Home for Imaginary Friends
1312	FHI	Family Health International, Fuji Heavy Industries,Ltd.
1313	FI	Finland (ISO 3166 digram; FIPS 10-4 country code)
1314	FIAT	Fabbrica Italiana Automobili Torino (Italian for: Italian Car Factory of Turin)
1315	FIB	Fucking Illinois Bastard (Wisconsin slang, variants exist)
1316	FIBUA	Fighting In Built-Up Areas
1317	FIC	Fellowship for Intentional Community
1318	FID	Foreign Internal Defence
1319	FIE	Fly-In Echelon
1320	FIFA	Fédération internationale de football association (French for: International Association Football Federation)
1321	FIFe	Fédération internationale féline (French for: International Feline Federation)
1322	FIFO	First In, First Out
1323	FIFRA	Federal Insecticide, Fungicide, and Rodenticide Act
1324	FIGJAM	Fuck I'm Good, Just Ask Me
1325	FIMPT	Fellow of the Institute of Maxillofacial Prosthetists and Technologists
1326	FIN	Finland (ISO 3166 trigram)
1327	FINA	Fédération internationale de natation (French for: International Swimming Federation)
1328	FIRES	Fever Induced Refractory Epilepsy Syndrome or Febrile Infection-Related Epilepsy Syndrome
1329	FIS	Fédération internationale de ski (French for: International Ski Federation)
1330	FISA	Fédération Internationale des Sociétés d'Aviron (French for: International Federation of Rowing Associations)
1331	FISH	Fluorescence In-Situ Hybridisation
1332	FiST	Fire Support Team
1333	FITS	Flexible Image Transport System
1334	FIU	Florida International University
1335	fJ	Femtojoule
1336	FJ	Fiji (ISO 3166 digram; FIPS 10-4 country code)
1337	FJI	Fiji (ISO 3166 trigram)
1338	FJN	Financial Job Network
1339	FK	Falkland Islands (ISO 3166 digram; FIPS 10-4 territory code)
1340	fK	Femtokelvin
1341	FKSM	Fort Knox Supplemental Manual
1342	FKT	Fastest Known Time
1343	fL	Femtolitre
1344	FL	Florida (postal symbol)
1345	fl	floruit (Latin for: living) (genealogy)
1346	FLA	Florida,Front Line Assembly,Future Large Aircraft
1347	FLAB	Four-letter abbreviation
1348	FLAC	Free Legal Advice Centres
1349	FLAC	Free Lossless Audio Codec
1350	FLAK	Flug-Abwehr-Kanone (German for: Anti-Aircraft Guns)
1351	FLB	Forward Logistics Base
1352	FLET	Forward Line of Enemy Troops
1353	FLG	Falun Gong
1354	FLIP	Flight Information Publication
1355	FLIR	Forward Looking InfraRed (sensor)
1356	FLK	Falkland Islands (ISO 3166 trigram)
1357	FLOT	Forward Line of Own Troops
1358	FLOTUS	First Lady of the United States (the wife of the President of the United States)
1359	FLQ	Free Legal Questions
1360	FLQ	Front de libération du Québec (French for: Québec Liberation Front)
1361	FLSA	Fair Labor Standards Act
1362	FLTSAT	Fleet Satellite
1363	FLTSATCOM	Fleet Satellite Communication System
1364	FLUBOS	Fat, Lazy, Useless, Bag Of Shit
1365	FM	Factory Mutual
1366	FM	Federal Magistrate (Australian post-nominal),Federated States of Micronesia (postal symbol; ISO 3166 digram; FIPS 10-4 territory code),Field Manual,Flight Manager,Frequency Modulation (electronics)
1367	fm	Femtometre
1368	Fm	Fermium
1369	FMC	Federal Magistrates' Court (an Australian federal court,formerly FMS),Food Machinery Corporation (original name of the company now known as FMC Corporation)
1370	FMCA	Federal Magistrates' Court of Australia (used for citing decisions of the FMC other than family law decisions)
1371	FMCAfam	Federal Magistrates' Court of Australia: family (used for citing family law decisions of the FMC)
1372	FMCG	Fast Moving Consumer Goods
1373	FME	Formal Methods Europe
1374	FMECA	Failure Modes and Effect Criticality Analysis
1375	FMJD	Fédération Mondiale du Jeu de Dames
1376	FMLA	Family Medical Leave Act
1377	FoE	Friends of the Earth
1378	FOGC	Federal Oil and Gas Council
1379	FOH	Front Of House
1380	FOIA	Freedom of Information Act
1381	FOM	Federation Object Model
1382	FONSI	Finding of No Significant Impact
1383	FOO	Forward Observation Officer
1384	FOOP	Friends Of Organ Pipes (Volunteer group)
1385	FoS	Family of Systems
1386	FOSE	Fallout 3 Script Extender
1387	FOSE	Federal Office Systems Expo
1388	FOT	Free on truck
1389	FOTA	Fellow of the Orthodontic Technicians Association
1390	FOTC	Flight of the Conchords
1391	FOUO	For Official Use Only
1392	FP	French Polynesia (FIPS 10-4 territory code)
1393	FPF	Federação Portuguesa de Futebol (Portuguese for: Portuguese Football Federation), Final Protective Fire
1394	FPS	Fire Prevention System
1395	FQ	Baker Island (FIPS 10-4 territory code),French Southern and Antarctic Territories (ISO 3166 digram; obsolete 1979)
1396	FR	France (FIPS 10-4 country code; ISO 3166 digram)
1397	Fr	Francium
1398	FRA	Federal Railroad Administration, France (ISO 3166 trigram)
1399	FRAND	Fair,reasonable,and non-discriminatory (concept in standards-setting and intellectual property law)
1400	FRCP	Federal Rules of Civil Procedure,Fellow of the Royal College of Physicians
1401	FRICBM	Full Range ICBM
1402	FRO	Faroe Islands (ISO 3166 trigram)
1403	FRS	Fellow of the Royal Society, U.S. Federal Reserve System
1404	FRSA	Fellow of the Royal Society of Art
1405	FRY	Federal Republic of Yugoslavia
1406	fs	Femtosecond
1407	fS	Femtosiemens
1408	FSA	Fire Support Area, UK Food Standards Agency, Functional Solution Analysis
1409	FSC	Federal Supply Classification, Forest Stewardship Council (ecological pressure group)
1410	FSCL	Fire Support Co-ordination Line
1411	FSE	Fire Support Element
1412	FSF	Free Software Foundation
1413	FSH	Follicle Stimulating Hormone
1414	FSI	Fuel Stratified Injection
1415	FSS	Fire Support Station
1416	FSSP	Families of Structurally Similar Proteins
1417	FSTC	Foreign Science Technology Center (now NGIC)
1418	fT	Femtotesla
1419	FTC	Federal Trade Commission
1420	FTE	Full Time Equivalent
1421	FTL	Faster Than Light
1422	FTS	Flight Termination System used during some rocket launches
1423	FTS	Fuck That Shit
1424	FU	Smoke (METAR Code)
1425	FUBAR	Fucked/Fouled Up Beyond All Recognition/Repair
1426	fV	Femtovolt
1427	fW	Femtowatt
1428	FW	Forward
1429	FWC	Football World Cup
1430	FWF	Fixed Word Format
1431	FWI	French West Indies
1432	FWIW	For What It's Worth
1433	FWS	U.S. Fish and Wildlife Service
1434	FWT	Fresh Water Tank
1435	FXX	Metropolitan France (ISO 3166 trigram; obsolete 1997)
1436	FYA	For Your Agenda
1437	FYDP	Five-Year Defense Plan (U.S.)
1438	FYI	For Your Information
1439	FYROM	Former Yugoslav Republic of Macedonia
1440	FZDZ	Freezing Drizzle (METAR Code)
1441	FZFG	Freezing Fog (METAR Code)
1442	FZRA	Freezing Rain (METAR Code)
1443	g	Gram
1444	G3	Heckler & Koch G3
1445	GAAR	General Anti-Avoidance Rule (tax evasion)
1446	GAB	Gabon (ISO 3166 trigram)
1447	GABA	Gamma-AminoButyric Acid
1448	GAD	Generalized Anxiety Disorder
1449	GAF	Garfield and Friends
1450	GAO	U.S. Government Accountability Office
1451	GAW	Global Atmospheric Watch
1452	GBBC	Great (Global) Backyard Bird Count
1453	GBE	Knight/Dame Grand Cross of the Order of the British Empire
1454	GBR	United Kingdom of Great Britain and Northern Ireland (ISO 3166 trigram)
1455	GCA	Graduate in Claims Administration
1456	GCD	see entry
1457	GCF	Greatest Common Factor
1458	GCI	Ground-controlled interception
1459	GCN	Gamma-ray burst Coordination Network
1460	GCS	Global Coordinate System
1461	GCSE	General Certificate of Secondary Education (UK)
1462	Gd	Gadolinium
1463	GD	Grenada (ISO 3166 digram)
1464	GDL	Game Definition Language
1465	GDR	General Distribution Release (Microsoft Term for a software service release; between Hotfix and Service Pack)
1466	GDR	German Democratic Republic (cf. DDR)
1467	GDW	Game Designers Workshop
1468	Ge	Germanium
1469	GEBCO	General Bathymetric Chart of the Oceans
1470	GEC	Great Engineering Challenge
1471	GED	General Educational Development (high school equivalency credential in the U.S. and Canada)
1472	GEEP	Geophysical Equipment Exploration Platform
1473	GEN	Full General (four stars) in the U.S. Army
1474	GeV	Gigaelectron-volt
1475	GEV	Ground Effect Vehicle
1476	GFCI	Ground Fault Circuit Interruptor (aka GFI)
1477	GFI	Ground Fault Interruptor (aka GFCI)
1478	GFL	German Football League (Germany's Bundesliga for American football; the English-language name is used in German without translation)
1479	GFN	Global Footprint Network
1480	GG	Georgia (FIPS 10-4 country code)
1481	GGK	Good God Karma
1482	GHA	Ghana (ISO 3166 trigram)
1483	GHB	gamma-Hydroxybutyric acid
1484	Gi	Gibi
1485	GIB	Gibraltar (ISO 3166 trigram)
1486	GIG	Global Information Grid
1487	GINO	Godzilla In Name Only
1488	GISS	General Impression of Size and Shape,Goddard Institute for Space Studies
1489	GJD	Geocentric Julian Day
1490	GLAAD	Gay and Lesbian Alliance Against Defamation
1491	GLAC	General Ledger Accounting Code
1492	GLAST	Gamma-ray Large Area Space Telescope
1493	GLBA	Gramm-Leach-Bliley Act
1494	GLC	Gas-liquid chromatography
1495	GLP	Guadeloupe (ISO 3166 trigram)
1496	GLV	Gained Life Value
1497	Gm	Gigametre
1498	GM	The Gambia (ISO 3166 digram),GameMaster (role-playing),General Motors,Genetically Modified,Germany (FIPS 10-4 country code),Guru Meditation (computing)
1499	GMAC	General Motors Acceptance Corporation,the original name of the company now known as Ally Financial,Graduate Management Admission Council,G-MAC,Great Midwest Athletic Conference
1500	GMB	The Gambia (ISO 3166 trigram),General,Municipal,Boilermakers (and Allied Trade Union)
1501	GMFSC	Ground Mobile Forces Satellite Communications
1502	GMO	Genetically Modified Organism
1503	GMPCS	Global Mobile Personal Communications by Satellite
1504	GNAS	Grand National Archery Society
1505	GNB	Guinea-Bissau (ISO 3166 trigram)
1506	GNP	Gross National Product
1507	GNQ	Equatorial Guinea (ISO 3166 trigram)
1508	GnRH	Gonadotropin-Releasing Hormone
1509	GO	Glorioso Islands (FIPS 10-4 territory code)
1510	GOA	General of the Army (United States only)
1511	GOAT	Greatest Of All Time
1512	GOC	General Officer Commanding
1513	GOES	Geostationary Operational Environmental Satellite
1514	GOP	Grand Old Party
1515	gorp	granola,oats,raisins,peanuts (another name for trail mix),probably a backronym
1516	GOSC	General Officer Steering Committee
1517	GOSH	Great Ormond Street Hospital
1518	GOSP	Gas/Oil Separation Plant
1519	GOTS	Government off-the-shelf
1520	GOYADIN	Get Off Your Arse,Do It Now (anti-procrastination mantra)
1521	GP	General Practitioner,General Purpose,Grand Prix,Guadeloupe (ISO 3166 digram; FIPS 10-4 territory code)
1522	GPA	Grade Point Average
1523	GPC	Global Path Cache
1524	GPIB	General-Purpose Instrumentation/Interface Bus
1525	GPO	General Post Office
1526	GPPC	Genetics and Public Policy Center
1527	GPR	Ground-Penetrating Radar
1528	GPS	General Problem Solver,Global Positioning System
1529	GPT	General Purpose Technology, Get paid to surf (an online business model)
1530	GQ	Equatorial Guinea (ISO 3166 digram),Gentlemen's Quarterly (the original name of the magazine now known simply as GQ),Guam (FIPS 10-4 territory code),GR[edit]
1531	GR	Greece (FIPS 10-4 country code; ISO 3166 digram),Hail (METAR Code)
1532	GRAIL	Gravity Recovery and Interior Laboratory
1533	GRAS	Generally recognized as safe (FDA list)
1534	GRB	Gamma-Ray Burst
1535	GRC	Greece (ISO 3166 trigram)
1536	GRD	Grenada (ISO 3166 trigram)
1537	GRE	Graduate Record Examination,Greece (IOC and FIFA trigram,but not ISO 3166)
1538	grep	[search] Globally for Regular Expression,Print [lines]
1539	GRID	Gay-Related Immune Deficiency (original name of AIDS)
1540	GRid	Global Release Identifier,a music industry identifier from the RIAA and IFPI
1541	GriT	Girl raised in Texas (Woman presenting firm southern traits/beliefs)
1542	GRL	Greenland (ISO 3166 trigram)
1543	GRN	Grenada (IOC and FIFA trigram,but not ISO 3166),Goods Received Note
1544	Gs	Gigasecond
1545	GSA	U.S. General Services Administration
1546	GSD	Graphical Situation Display
1547	GSGB	(God send glamour boy 9-10/10)
1548	GSK	GlaxoSmithKline [good sexual karma]
1549	GSN	Game Show Network
1550	GSO	General Services Officer (U.S. Department of State)
1551	GSOH	Good Sense Of Humour
1552	GSP	Georges St-Pierre (Canadian MMA fighter)
1553	GSR	Gun Shot Residue
1554	GSS	Generic Security Services
1555	GSW	Gunshot wound
1556	GTD	Getting Things Done
1557	GTG	Got To Go (Internet chat)
1558	GTGN	Getty Thesaurus of Geographic Names
1559	GTK	Good To Know (Internet chat)
1560	GTM	Guatemala (ISO 3166 trigram)
1561	GU	Guam (postal symbol; ISO 3166 digram)
1562	GUF	French Guiana (ISO 3166 trigram)
1563	GUILT	Gangliated Utrophin Immuno Latency Toxin
1564	GULCR	Grupo de Usuarios de Linux de Costa Rica
1565	GUT	Grand Unification Theory
1566	GWARS	Ground Warfare System (simulation)
1567	GWAS	Grand Western Archery Society
1568	GWOT	Global War on Terrorism
1569	GXE	Gene-enivronment interaction
1570	GXM	Matrox Graphics eXpansion Module
1571	GY	Guyana (FIPS 10-4 country code; ISO 3166 digram)
1572	GZK	Greisen-Zatsepin-Kuzmin cut-off (cosmic ray energies)
1573	h	Hecto
1574	HAARP	High Frequency Active Auroral Research Program
1575	HAART	Highly Active Anti-Retroviral Therapy
1576	HAI	Human Awareness Institute
1577	HAL	Hardware Abstraction Layer
1578	HALO	High Altitude Low Opening (parachute jump)
1579	HAM	Amateur radio operator
1580	HANS	Head And Neck Support (device used in many race cars)
1581	HARM	High-speed Anti-Radiation Missile
1582	HAW	Heavy Antitank Weapon
1583	HAWK	Homing All the Way Killer (air defence system)
1584	HAZ	Heat-Affected Zone
1585	HAZMAT	Hazardous Materials
1586	HBCD	HexaBromoCycloDodecane
1587	HBO	Home Box Office
1588	HBR	Harvard Business Review
1589	HBT	Heterojunction Bipolar Transistor
1590	HBV	Hepatitis B Virus
1591	HCCI	Homogeneous Charge Compression Ignition
1592	HCF	Highest Common Factor
1593	HCSC	Higher Command and Staff Course
1594	HDL	High-Density Lipoprotein
1595	HDM	Human Decision-Making
1596	HDRA	Henry Doubleday Research Association
1597	He	Helium
1598	HE	High Explosive
1599	HEAT	High Explosive Anti-Tank (ammunition)
1600	HEBA	Hellenic Basketball Clubs Association
1601	HEER	High-Explosive Extended Range (ammunition)
1602	HEIC	Honourable East India Company
1603	HEMP	High-Altitude Electromagnetic Pulse
1604	HEOSS	High Earth Orbit Space Surveillance
1605	HEP	High-Explosive Plastic (ammunition)
1606	HEPA	High-Efficiency Particulate Air (filter)
1607	HESV	Heavy Engineering Support Vehicle
1608	HETT	Heavy Equipment Transporting Truck / Heavy Equipment Truck Tractor
1609	HEU	Highly Enriched Uranium
1610	Hf	Hafnium
1611	HF	High Frequency
1612	HFE	Human Fertilisation and Embryology (UK Act)
1613	HFE	The common-emitter current gain in a BJT transistor (also represented by βF). See: BJT
1614	HFEA	Human Fertilisation and Embryology Authority (UK)
1615	Hg	Mercury (Latin Hydrargyrum)
1616	HGC	UK Human Genetics Commission
1617	HGF	Human Growth Factor
1618	HGTV	Home & Garden Television
1619	HI	Hawaii (postal symbol)
1620	HIH	His (or Her) Imperial Highness
1621	HIM	His (or Her) Imperial Majesty
1622	HIMAD	High to Medium Altitude Air Defence (see also H/MAD)
1623	HIMEZ	High Altitude Missile Engagement Zone
1624	HIMYM	How I Met Your Mother
1625	HIPAA	U.S. Health Insurance Portability and Accountability Act
1626	Hipparcos	HIgh Precision Parallax COllecting Satellite
1627	Hird	Hurd of interfaces representing depth (cf. HURD)
1628	HiRISE	High Resolution Imaging Science Experiment
1629	HIT	Health Information Technology
1630	HIV	Human Immunodeficiency Virus
1631	HIWT	Hobart Institute of Welding Technology
1632	HJD	Heliocentric Julian Day
1633	HK	Hong Kong (ISO 3166 digram; FIPS 10-4 territory code)
1634	HKG	Hong Kong (ISO 3166 trigram)
1635	HKS	HyperKinetic Syndrome
1636	hL	Hectolitre
1637	HL	Holding Line
1638	HLL	High-Level Language
1639	HLN	Headline News
1640	HLOS	High Level Output Specification
1641	HM	Heard Island and McDonald Islands (ISO 3166 digram; FIPS 10-4 territory code)
1642	HMCE	Her/His Majesty's Customs and Excise (former UK government department; succeeded by HM Revenue and Customs)
1643	HMD	Heard and McDonald Islands (ISO 3166 trigram)
1644	HMF	HydroxyMethyl Furfural
1645	HMO	Health maintenance organization
1646	HMP	Her Majesty's Prison
1647	HMRC	Her/His Majesty's Revenue and Customs
1648	HMSO	Her Majesty's Stationery Office
1649	HMV	His Master's Voice
1650	HN	Honduras (ISO 3166 digram)
1651	HND	Honduras (ISO 3166 trigram)
1652	Ho	Holmium
1653	HO	Honduras (FIPS 10-4 country code)
1654	HOLLAND	Hope Our Love Lasts And Never Dies
1655	HOSTAC	Helicopter Operations from Ships Other Than Aircraft Carriers
1656	HOT	Highly Optimised Tolerance
1657	HOTAS	Hands on throttle-and-stick
1658	HOV	High Occupancy Vehicle
1659	hp	horse power
1660	HPA	UK Health Protection Agency
1661	HPCL	Hindustan Petroleum Corporation Limited
1662	HPLC	High Performance Liquid Chromatography
1663	HPT	High[er] Payoff Target
1664	HPV	Human Papilloma Virus
1665	HRBL	High-level Representation of Behavior Language (original name of the Herbal language)
1666	HRD	Human Resource Development
1667	HRF	High iness Forces
1668	HRH	His (or Her) Royal Highness
1669	HRM	His (or Her) Royal Majesty
1670	HRM	Human Resource Management
1671	HRT	Hormone Replacement Therapy
1672	Hs	Hassium
1673	HSBC	The Hong Kong and Shanghai Banking Corporation
1674	HSC	Higher School Certificate
1675	HSM	High School Musical
1676	HSMAD	Human Science/Modeling and Analysis Data
1677	HSN	Home Shopping Network
1678	HSPH	Harvard School of Public Health
1679	HSSI	High-Speed Serial Interface
1680	HST	see entry
1681	HTA	HyperText Application
1682	HTFU	Harden The Fuck Up
1683	HTH	Hope That Helps
1684	HTI	Haiti (ISO 3166 trigram)
1685	HTML	HyperText Markup Language
1686	HTR	Heated Towel Rail
1687	HTS	High-Temperature Superconducting wire
1688	HTTP	HyperText Transfer Protocol
1689	HU	Hungary (ISO 3166 digram; FIPS 10-4 country code)
1690	HUHA	Head up his/her ass (Marine salute; probably a backcronym)
1691	HUN	Hungary (ISO 3166 trigram)
1692	HURD	Hird of Unix-Replacing Daemons (cf. Hird)
1693	HV	Upper Volta (ISO 3166 digram; obsolete 1984)
1694	HVAP	High Velocity Armour Piercing (ammunition)
1695	HVHF	High velocity human factors
1696	HVM	High Velocity Missile
1697	HVO	Upper Volta (ISO 3166 trigram; obsolete 1984)
1698	HWM	Hardware morphing (computer graphics rendering)
1699	HXB	The glycoprotein Tenascian C
1700	HZ	Haze (METAR Code)
1701	Hz	Hertz
1702	IA	Iowa (postal symbol)
1703	IAAL	I Am A Lawyer
1704	IAB	International Association for Biologicals
1705	IAD	Ion Assisted Deposition
1706	IADS	Integrated Air Defence System
1707	IAEA	International Atomic Energy Agency
1708	IAF	{i} Industrial Areas Foundation
1709	IAFG	Information Assurance Focus Group
1710	IANA	Internet Assigned Numbers Authority
1711	IANAL	I Am Not A Lawyer
1712	IAS	Image Assessment System
1713	IASIP	It's Always Sunny in Philadelphia
1714	IATA	International Air Transport Association
1715	IATF	International Automotive Task Force
1716	IATSE	International Alliance of Theatrical Stage Employees
1717	IAUC	International Astronomical Union Circular
1718	IAW	In Accordance With
1719	IB	International Baccalaureate
1720	IBA	Important Bird Area
1721	IBD	Inflammatory Bowel Disease
1722	IBDM	Information Based Decision Making
1723	IBM	International Business Machines
1724	IBRD	International Bank for Reconstruction and Development (part of the World Bank)
1725	IBS	Irritable Bowel Syndrome
1726	ICANN	Internet Corporation for Assigned Names and Numbers
1727	ICAO	International Civil Aviation Organization
1728	ICBM	Intercontinental Ballistic Missile
1729	ICBN	International Code of Botanical Nomenclature
1730	ICE	In case of emergency
1731	ICES	International Council for the Exploration of the Sea
1732	ICF	Intelligent Community Forum
1733	ICMP	Internet Control Message Protocol
1734	ICNAF	International Commission for the Northwest Atlantic Fisheries (became NAFO in 1978)
1735	ICO	Intermediate Circular Orbit
1736	ICPE	International Conference on Pharmacoepidemiology,the annual conference of the International Society for Pharmacoepidemiology
1737	ICRAF	International Centre for Research in Agroforestry (a.k.a. World Agroforestry Centre since 2002)
1738	ICRISAT	International Crops Research Institute for the Semi-Arid Tropics
1739	ICRL	Individual Component Repair List
1740	ICRS	International Celestial Reference System
1741	ICSI	Intracytoplasmic Sperm Injection
1742	ICT	Information and communication technologies
1743	ICTH	Island Closest to Heaven/Hell Final Fantasy VIII
1744	ICV	Infantry Carrier Vehicle
1745	ICYMI	In Case You Missed It
1746	IDC	International Data Corporation
1747	IDDI	I don't do initialisms (see irony)
1748	IDGAF	I don't give a fuck
1749	IDK	I don't know
1750	IDL	Interface Definition Language
1751	IDN	Indonesia (ISO 3166 trigram)
1752	IEA	International Energy Agency
1753	IEC	International Electrotechnical Commission
1754	IED	Improvised Explosive Device
1755	IELTS	International English Language Testing System
1756	IER	Information Exchange Requirement
1757	IET	Initial Entry Training
1758	IET	Institution of Engineering and Technology
1759	IETF	Internet Engineering Task Force
1760	IEW	Intelligence and Electronic Warfare
1761	IFAB	International Football Association Board
1762	IFAH	International Federation for Animal Health
1763	IFAP	International Federation of Agricultural Producers
1764	IFO	Identified Flying Object (see also UFO)
1765	IFOV	Instantaneous Field of View
1766	IFPI	International Federation of Phonographic Industries
1767	IFRB	International Frequency Registration Board
1768	IFV	Infantry Fighting Vehicle
1769	IG	Inspector General
1770	IGNOU	Indira Gandhi National Open University
1771	IGS	International Ground Station
1772	IHH	Idiopathic Hypogonadotropic Hypogonadism
1773	IHO	International Hydrographic Organization
1774	IHR	Institute for Historical Review
1775	IHSI	Institutum Historicum Societatis Iesu (Jesuit Historical Institute)
1776	II	Two (in Roman numerals)
1777	IICA	Inter-American Institute for Cooperation on Agriculture
1778	IIE	Innovative Interstellar Explorer
1779	III	Three (in Roman numerals)
1780	IIRC	If I Recall/Remember Correctly
1781	IISS	International Institute for Strategic Studies
1782	IJN	Imperial Japanese Navy (World War II)
1783	IJWP	Interim Joint Warfare Publication
1784	ILDS	Improved Landmine Detection System
1785	ILO	International Labour Organization
1786	ILRI	International Livestock Research Institute
1787	ILY	I Love You [pronounced ILL-LEE]
1788	IMBD	International Migratory Bird Day
1789	IMDb	Internet Movie Database
1790	IME	In My Experience
1791	IMHO	In My Humble/Honest Opinion
1792	IML	International Mister Leather
1793	IMNSHO	In My Not So Humble Opinion
1794	IMPAC	International Merchant Purchase Authorization Card
1795	IMPACT	International Medical Products Anti-Counterfeiting Taskforce
1796	IMPATT	IMPact Avalanche Transit Time diode
1797	IMPT	Institute of Maxillofacial Prosthetists and Technologists
1798	IMRL	Individual Material iness List
1799	IMRO-Internal Macedonian Revolutionary Organization	Irish Music Rights Organisation
1800	IMsL	International Ms. Leather
1801	IMT	Integrated Management Tool
1802	IMU	International Mathematical Union
1803	In	Indium
1804	INA	Immigration and Nationality Act
1805	INAS	International Near-Earth Asteroid Survey
1806	INCITS	InterNational Committee for Information Technology Standards
1807	IND	India (ISO 3166 trigram)
1808	INDIGO	(U.S.) INtelligence DIvision Gaming Operation
1809	inet	the Internet
1810	INFORMS	(U.S.) Institute for Operations Research and the Management Sciences
1811	INFOSEC	Information Security
1812	INLA	Irish National Liberation Army
1813	INMARSAT	International Maritime Satellite organization
1814	INRIA	Institut national de recherche en informatique et en automatique
1815	INS	Immigration and Naturalization Service
1816	InSAR	Interferometric synthetic aperture radar
1817	INST	Information Standards and Technology
1818	INTERFET	International Force for East Timor
1819	INTSUM	Intelligence Summary
1820	IO	British Indian Ocean Territory (ISO 3166 digram; FIPS 10-4 territory code)
1821	IOT	British Indian Ocean Territory (ISO 3166 trigram)
1822	IPB	Intelligence Preparation of the Battlefield
1823	IPL	Inferior Parietal Lobule
1824	IPO	Initial Public Offering
1825	IPT	Integrated Product/Project Team
1826	IPTS	Institute for Prospective Technological Studies
1827	IPTV	Internet Protocol TeleVision
1828	IPW	Interrogation of Prisoners of War
1829	Ir	Iridium
1830	IRAD	Internal Research and Development
1831	IRAN	(I) Inspect and Repair As Necessary
1832	IRAS	Infrared Astronomical Satellite
1833	IRB	International Rugby Board
1834	IRBM	Intermediate Range Ballistic Missile
1835	IREA	Intermountain Rural Electric Association
1836	IRINN	Islamic Republic of Iran News Network
1837	IRL	Ireland (ISO 3166 trigram),Industrial Research Limited,Indy Racing League,In real life
1838	IRN	Iran (ISO 3166 trigram)
1839	IRO	International Refugee Organisation
1840	IRQ	Iraq (ISO 3166 trigram)
1841	IRS	U.S. Internal Revenue Service
1842	IRST	Infra-red Search and Track
1843	ISAAA	International Service for the Acquisition of Agri-biotech Applications
1844	ISAR	Inverse SAR (Synthetic Aperture Radar)
1845	ISB	Intermediate Staging Base
1846	ISBN	International Standard Book Number (ISO 2108)
1847	ISCCP	International Satellite Cloud Climatology Project
1848	ISCII	Indian Standard Code for Information Interchange
1849	ISDN	Integrated Services Digital Network
1850	ISEF	Intel International Science and Engineering Fair
1851	ISEN	Internet Search Environment Number
1852	ISF	Internal Security Force
1853	ISIL	Islamic State of Iraq and the Levant
1854	ISIS	Institute for Science and International Security, or: Islamic State of Iraq and Syria
1855	ISL	Iceland (ISO 3166 trigram)
1856	ISLN	International Standard Lawyer Number (used initially by LexisNexis Martindale-Hubbell)
1857	ISMB	International Society of Matrix Biologists
1858	ISMC	Intelligent Sounding Meaningless Conversation
1859	ISOGP	Indian Society of Orthodontics for General Practitioners [2]
1860	ISPE	International Society for Pharmacoepidemiology
1861	ISRO	Indian Space Research Organisation
1862	ISSCR	International Society for Stem Cell Research
1863	ISSN	International standard serial number (ISO 3297)
1864	ISTC	Institute of Scientific and Technical Communications (UK)
1865	ISTS	Intel Science Talent Search
1866	ITA	Italy (ISO 3166 trigram)
1867	ITAG	Inertial Terrain-Aided Guidance
1868	ITALY	I'll Truly Always Love You
1869	ITAS	Improved Target Acquisition Sight
1870	ITC	InferoTemporal Cortex (neurophysiology)
1871	ITCZ	Intertropical Convergence Zone
1872	ITEC	Information Technology Exposition & Conference
1873	ITEMS	Interactive Tactical Environment Management System
1874	ITER	International Thermonuclear Experimental Reactor
1875	ITF	International Tennis Federation
1876	ITK	In The Know
1877	ITN	Independent Television News (British)
1878	ITT	International Telephone and Telegraph (U.S.)
1879	ITTO	International Tropical Timber Organization
1880	IUCN	International Union for the Conservation of Nature and Natural Resources (World Conservation Union)
1881	Iveco	Industrial Vehicles Corporation
1882	IVF	In Vitro Fertilisation
1883	IVI	Interchangeable Virtual Instrument
1884	IVIS	Inter-Vehicle Information System
1885	IVL	Inter-Visibility Line
1886	IVM	In Vitro [Oocyte] Maturation
1887	IVO	In Vicinity Of
1888	IW	Information Warfare
1889	IWARS	Infantry Warrior Simulation
1890	IWC	International Whaling Commission
1891	IWW	Industrial Workers of the World
1892	IX	Nine (in Roman numerals)
1893	IXT	IntraText digital library; IntraText lexical hypertext
1894	IY	Saudi-Iraqi neutral zone (FIPS 10-4 territory code; obsolete 1993)
1895	IZ	Iraq (FIPS 10-4 country code)
1896	J	Joule
1897	J1	Joint [Manpower &] Personnel Directorate
1898	J2	Joint Intelligence Directorate
1899	J3	Joint Operations Directorate
1900	J4	Joint Logistics Directorate
1901	J5	Joint Strategic Plans & Policy Directorate
1902	J7	Joint Operational Plans & Interoperability Directorate
1903	JA	Japan (FIPS 10-4 country code)
1904	JAFT	Just A Field Test
1905	JAL	Japan Airlines
1906	JALLC	Joint Analysis and Lessons Learned Centre (NATO)
1907	JAM	Jamaica (ISO 3166 trigram)
1908	JAMA	Journal of the American Medical Association
1909	JANET	Joint Academic Network
1910	JATO	Jet-Assisted Take-Off
1911	JB	Jail Bait
1912	JB	Junior Branch
1913	JBFSA	Joint Blue Force Situational Awareness
1914	JCDB	Joint Common Data Base
1915	JCDS	Joint Chiefs of the Defence Staff
1916	JCIDS	Joint Capabilities Integration and Development System
1917	JCL	Job Control Language
1918	JCP	Java Community Process
1919	JCS	Joint Chiefs of Staff
1920	JCW	Juggalo Championship Wrestling
1921	JDBC	Java Data Base Connectivity
1922	JDEM	Joint Dark Energy Mission
1923	JDL	Jewish Defense League
1924	JE	Jersey (FIPS 10-4 territory code)
1925	JEFX	Joint Expeditionary Force eXperiment
1926	JET	Joint European Torus
1927	JEZ	Joint Engagement Zone
1928	JFACC	Joint Force Air Component Commander
1929	JFACTSU	U.S. Joint Forward Air Control Training and Standards Unit
1930	JFC	Joint Force Commander
1931	JFK	John Fitzgerald Kennedy or the airport named after him.
1932	JFLCC	Joint Force Land Component Commander
1933	JFMCC	Joint Force Maritime Component Commander
1934	JFO	Journal of Field Ornithology
1935	JFSOCC	Joint Force Special Operations Component Commander
1936	JFTX	Joint Field Training Exercise
1937	JH	Japan Highway Public Corporation
1938	JH	Jharkhand (Indian state code)
1939	JI	Joint Implementation
1940	JIB	Joint Information Bureau
1941	JIC	Joint Intelligence Centre
1942	JINI	Java Intelligent Network Infrastructure
1943	JITC	Joint Interoperability Test Command
1944	JIVE	Joint Institute for VLBI (Very Long Baseline Interferometry) in Europe
1945	JJAP	Japanese Journal of Applied Physics
1946	JL	Japan Airlines (IATA airline designator)
1947	JLA	Justice League of America
1948	JM	Jamaica (FIPS 10-4 country code; ISO 3166 digram)
1949	JMS	Java Message Service
1950	JN	Jan Mayen Island (FIPS 10-4 territory code)
1951	JNI	Java Native Interface
1952	JNLP	Java Network Launch Protocol
1953	JO	Jordan (FIPS 10-4 country code; ISO 3166 digram)
1954	JOA	Joint Operations Area
1955	JOPES	Joint Operations Planning and Execution System
1956	JOR	Jordan (ISO 3166 trigram)
1957	JOTS	Joint Operations Tactical System
1958	JPL	Jet Propulsion Laboratory
1959	JPN	Japan (ISO 3166 trigram)
1960	JPOW	Joint Project Optic Windmill
1961	JRDF	Joint Rapid Deployment Forces
1962	JRE	Java Runtime Environment
1963	JREF	James Randi Educational Foundation
1964	JROC	Joint Requirements Oversight Council
1965	JROCM	JROC Memorandum
1966	JRRF	Joint Rapid Reaction Force
1967	JRSAI	Journal of the Royal Society of Antiquaries of Ireland
1968	JSAP	Japan Society of Applied Physics
1969	JSCSC	Joint Services Command and Staff College
1970	JSEAD	Joint Suppression of Enemy Air Defence (see SEAD)
1971	JSF	Joint Strike Fighter
1972	JSIMS	Joint Simulation System
1973	JSOA	Joint Special Operations Area
1974	JSOTF	Joint Special Operations Task Force
1975	JSP	JavaServer Page
1976	JSP	Joint Services Publication
1977	JSR	Java Specification Request
1978	JSS	Joint Support Ship Project
1979	JTC	Joint Training Confederation
1980	JTF	Joint Task Force
1981	JTFEX	Joint Task Force Exercise
1982	JTLS	Joint Theater Level Simulation
1983	JTMD	Joint Theatre Missile Defence
1984	JTN	Johnston Atoll (ISO 3166 trigram; obsolete 1986)
1985	JU	Juan de Nova Island (FIPS 10-4 territory code)
1986	JUGFET	JUnction Gate Field-Effect Transistor
1987	JUICE	JUpiter ICy Moon Explorer
1988	JUO	Joint Urban Operations
1989	JV	Joint Venture,Junior Varsity
1990	JW	Jehovah's Witnesses
1991	JWARS	Joint Warfare System (simulation)
1992	JWP	Joint Warfare Publication
1993	JY	Japanese Yen
1994	JZ	Joint Zone
1995	K	Kelvin,Potassium (Latin Kalium),Tanker (aircraft designation code)
1996	k	Kilo-
1997	K	picokelvin
1998	K9	Canine Police Unit
1999	Ka	Kamov Design Bureau
2000	kA	Kiloampere
2001	KA	Knowledge Acquisition,Karnataka (Indian state code)
2002	KAF	Kandahar Air Field
2003	KANUKOKA	Kalaallit Nunaanni Kommunit Kattuffiannit (Kalaallisut, Greenlandic Communities Association
2004	KARNAC	Knowledge Aided Retrieval in Activity Context
2005	KARR	Knight Automated Roving Robot (Knight Rider character)
2006	KATUSA	Korean Augmentation To United States Army
2007	KAZ	Kazakhstan (ISO 3166 trigram)
2008	KBE	Knight Commander of the Order of the British Empire
2009	KBO	Kuiper Belt Object
2010	KBVB	Koninklijke Belgische Voetbalbond (Dutch for Royal Belgian Football Association)
2011	kC	Kilocoulomb
2012	KCK	Kansas City,Kansas,Koma Civakên Kurdistan (Kurdish, Union of Communities in Kurdistan)
2013	KCL	King's College London
2014	KCMO	Kansas City,Missouri (pronounced: K-C-Moe)
2015	KCS	Kansas City Southern Railway (AAR reporting mark)
2016	KD	Kawasaki Disease,Kraft Dinner
2017	KE	Kenya (FIPS 10-4 country code; ISO 3166 digram),Kinetic Energy,Knowledge Engineering
2018	KEDO	Korean Peninsula Energy Development Organization
2019	KEN	Kenya (ISO 3166 trigram)
2020	KERA	Kentucky Education Reform Act (of 1990)
2021	kerma	Kinetic Energy Released in MAterial / in MAtter / per unit MAss
2022	KESR	Kent and East Sussex Railway.
2023	KET	Kentucky Educational Television,Key English Test
2024	kF	Kilofarad
2025	KFC	Kentucky Fried Chicken
2026	KFOR	UN Kosovo Force
2027	KFUPM	King Fahd University of Petroleum & Minerals
2028	KG	Kyrgyzstan (FIPS 10-4 country code; ISO 3166 digram)
2029	KGO	Knight of the Guelphic Order of Hanover
2030	KGZ	Kyrgyzstan (ISO 3166 trigram)
2031	KH	Cambodia (ISO 3166 digram)
2032	kH	Kilohenry
2033	KHL	Kontinental Hockey League
2034	KHM	Cambodia (ISO 3166 trigram)
2035	KHz	Kilohertz
2036	Ki	Kibi
2037	KI	Kiribati (ISO 3166 digram)
2038	KIA	Killed In Action
2039	KIDS	Knowledge-based Integrated Design System
2040	KIR	Kiribati (ISO 3166 trigram)
2041	KISS	Keep It Simple,Stupid / Keep It Short and Simple,Korean Intelligence Support System
2042	KIT	Keep In Touch
2043	KITECH	Korean Institute of Industrial Technology
2044	KITT	Knight Industries Two Thousand, Knight Industries Three Thousand
2045	kJ	Kilojoule
2046	kK	Kilokelvin
2047	KKK	Ku Klux Klan
2048	kL	Kilolitre
2049	KLENOT	KLEť Observatory Near Earth and Other unusual objects observations Team and Telescope
2050	KLOC	Kilo Lines Of Code
2051	KM	Comoros,Knowledge Management
2052	kN	Kilonewton
2053	KNA	Saint Kitts and Nevis (ISO 3166 trigram)
2054	KNVB	Koninklijke Nederlandse Voetbal Bond (Dutch for Royal Dutch Football Association)
2055	KO	Knocked Out
2056	KOR	Republic of Korea (ISO 3166 trigram)
2057	KP	Kim Possible
2058	KPMG	Klynveld,Peat,Marwick,Goerdeler
2059	KPNO	Kitt Peak National Observatory
2060	KQ	Kenya Airways (IATA airline designator), Kingman Reef (FIPS 10-4 territory code)
2061	KR	Kiribati (FIPS 10-4 country code), Republic of Korea (ISO 3166 digram)
2062	Kr	Krypton
2063	KS	Kansas (postal symbol), Republic of Korea (FIPS 10-4 country code)
2064	kS	Kilosiemens
2065	KSC	Kennedy Space Center
2066	KSI	Killed or Seriously Injured
2067	KSU	Kansas State University
2068	KT	Christmas Island (FIPS 10-4 territory code), Knight of the Order of the Thistle, Knights Templar
2069	kT	Kilotesla
2070	KTS	Knight of the Tower and Sword (of Portugal)
2071	KU	Kuwait (FIPS 10-4 country code)
2072	KUW	Kuwait (UNDP country code,IOC and FIFA trigram,but not ISO 3166)
2073	kV	Kilovolt
2074	KV	Kosovo
2075	kW	Kilowatt
2076	KW	Kuwait (ISO 3166 digram)
2077	KWB	Kids' WB!
2078	KWT	Kuwait (ISO 3166 trigram)
2079	KX	Cayman Airways (IATA airline designator)
2080	KY	Cayman Islands (ISO 3166 digram), Kentucky (postal symbol)
2081	KZ	Kazakhstan (FIPS 10-4 country code; ISO 3166 digram)
2082	KZN	KwaZulu-Natal
2083	La	Lanthanum
2084	LA	Laos (FIPS 10-4 country code; ISO 3166 digram), Louisiana (postal symbol), Los Angeles
2085	LAAS	Local Area Augmentation System, Los Angeles Astronomical Society
2086	LAB	Logistics Assault Base
2087	LabVIEW	Laboratory Virtual Instrumentation Engineering Workbench
2088	LACMA	Los Angeles County Museum of Art
2089	LAD	Laser Aiming Device
2090	LADW	Local Air Defence Warning
2091	LAESI	Local Authority & Emergency Service Information
2092	LAN	Local Area Network
2093	LANL	Los Alamos National Laboratory
2094	LAO	Laos (ISO 3166 trigram)
2095	LAR	Light Armoured Reconnaissance, Logistics Assistance Representative
2096	LARC	Livermore Advanced Research Computer (cf. LLNL)
2097	LARP	Live-Action Role-Playing
2098	Laser	Light Amplification by Stimulated Emission of Radiation (cf. Maser)
2099	LAT	Lowest Astronomical Tide (nautical charts),Licensed Athletic Trainer (used in many of the United States; see www.oata.org)
2100	LATA	Local Access Transport Area
2101	LATCH	Lower Anchors and Tethers for Children (U.S. standard for attachment points for child safety seats in passenger cars)
2102	LAV	Land Assault Vehicle, Light Armoured Vehicle, Lymphadenopathy-Associated Virus
2103	LAW	Light Antitank Weapon
2104	LAX	Los Angeles International Airport, The Latin American Xchange (professional wrestling)
2105	LB	Lebanon (ISO 3166 digram)
2106	LBH	Light Battlefield Helicopter, Lyman-Birge-Hopfield bands
2107	LBJ	Lady Bird Johnson,LeBron James,Light Bulb Joke,Little Beagle Johnson (the dog owned by Lyndon and Lady Bird Johnson),Lyndon Baines Johnson
2108	LBN	Lebanon (ISO 3166 trigram)
2109	LBNL	Lawrence Berkeley National Laboratory
2110	LBR	Liberia (ISO 3166 trigram)
2111	LBS	Location-Based Services
2112	LBT	Large Binocular Telescope
2113	LBW	Leg Before Wicket
2114	LBY	Libya (ISO 3166 trigram)
2115	LCA	Saint Lucia (ISO 3166 trigram)
2116	LCC	Land Component Commander
2117	LCCP	Light Contingency Communications Package
2118	LCD	Liquid Crystal Display
2119	LCM	Least/Lowest Common Multiple
2120	LCS	League of Legends Championship Series
2121	LDA	Lateral Drift Apparatus (paratroops)
2122	LDC	Lesser Developing/Developed Country
2123	LDL	Low-Density Lipoprotein
2124	LDV	Local Defence Volunteers (British Home Guard)
2125	LDW	Lane Departure Warning (ADAS)
2126	LE	Lebanon (FIPS 10-4 country code)
2127	LEC	Local Exchange Carrier
2128	LED	Light-Emitting Diode
2129	LEGAD	Legal Advice
2130	Legs	level emotion gad speed
2131	LEMOSS	Long-Endurance MObile Submarine Simulator
2132	LEN	Large Extension Node
2133	LEP	Large Electron-Positron collider
2134	LER	Loss-Exchange Ratio
2135	LEU	Low-Enriched Uranium
2136	LF	Low Frequency
2137	LFO	Low Frequency Oscillation / Oscillator
2138	LFTR	Liquid fluoride thorium reactor
2139	LG	Latvia (FIPS 10-4 country code)
2140	LGM	Little Green Men
2141	LGS	Landsat Ground Station
2142	LHC	Large Hadron Collider
2143	LHS	Left Hand Side
2144	Li	Lithium
2145	LIBOR	London Interbank Offered Rate
2146	LIBS	Laser Induced Breakdown Spectroscopy
2147	LIE	Liechtenstein (ISO 3166 trigram)
2148	LIGO	Laser Interferometer Gravitational-Wave Observatory
2149	LINEAR	Lincoln Near-Earth Asteroid Research
2150	LISA	Laser Interferometer Space Antenna
2151	LIVE	Liquid Inertial Vibration Eliminator
2152	LJJ	Lord Justices of Appeal
2153	LK	Sri Lanka (ISO 3166 digram)
2154	LKA	Sri Lanka (ISO 3166 trigram)
2155	LKR4	Linkwitz-Riley 4th order (audio crossover type)
2156	LLAD	Low Level Air Defence
2157	LLB	Legum Baccalaureus (Latin: Bachelor of Laws)
2158	LLC	Limited Liability Company
2159	LLLTV	Low-Light Level Television
2160	LLNL	Lawrence Livermore National Laboratory
2161	LLP	Limited Liability Partnership
2162	LLTR	Low-Level Transit Route
2163	LMAO	Laughing My Ass Off (Internet shorthand)
2164	LMB	Lick My Balls
2165	LMFAO	Laughing My F**king Ass Off (Internet shorthand,electro-hop duo)
2166	LMN	Lifetime Movie Network
2167	LMS	Like My Status (Internet shorthand)
2168	LMV	() Light Motor Vehicle
2169	LNER	London and North Eastern Railway
2170	LNG	Liquefied Natural Gas
2171	LNO	Liaison Officer
2172	LO	Slovakia (FIPS 10-4 country code)
2173	LOA	Limit Of Advance
2174	LOC	Level of Operational Capability,Limited Operational Capability,Lines Of Code,Lines Of Communication,see entry
2175	LoD	Lines of Development (UK)
2176	LOFAR	Low Frequency Analysis and Recording
2177	LOGPAC	Logistics Package
2178	LOL	Laughing Out Loud (Internet shorthand)
2179	LOMEZ	Low Altitude Missile Engagement Zone
2180	LONEOS	Lowell Observatory Near-Earth-Object Search
2181	LORTID	LOng Range Target IDentification
2182	LOS	Line Of Sight
2183	LOSAT	Line-Of-Sight Anti-Tank (missile)
2184	LOTA	Licentiate of the Orthodontic Technicians Association
2185	LOTIS	Livermore Optical Transient Imaging System
2186	LOTS	Logistics Over-The-Shore
2187	LPC	Linear Predictive Coding
2188	LPG	Liquefied Petroleum Gas (cf. LNG)
2189	LPI	Low Probability of Intercept
2190	LQ	Palmyra Atoll (FIPS 10-4 territory code)
2191	Lr	Lawrencium
2192	LR	Liberia (ISO 3166 digram)
2193	LRC	Logistics iness Center
2194	LRGW	Long-Range Guided Weapon
2195	LRICBM	Limited Range ICBM
2196	LRIP	Low Rate Initial Production
2197	LRP	Logistics Release Point
2198	LRPE	Long-Range Planning Element
2199	LRS	Long Range Surveillance
2200	LRU	Line-Replaceable Unit
2201	LSI	Large-Scale Integration
2202	LSIF	Labour Sponsored Investment Fund
2203	LSND	Liquid Scintillator Neutrino Detector
2204	LSO	Lesotho (ISO 3166 trigram)
2205	LSST	Large Synoptic Survey Telescope
2206	Lt	Lieutenant
2207	LtC	Lieutenant-Colonel (U.S.)
2208	LTC	Long-Term Costing
2209	Ltd	Limited
2210	LTDP	Long-Term Defence Plan
2211	LTI	Linear Time-Invariant
2212	LTM	Acronym for Laughing To Myself
2213	LTP	Long-Term Potentiation
2214	LTU	Lithuania (ISO 3166 trigram)
2215	LU	Acronym Love You
2216	LU	Loonatics Unleashed
2217	Lu	Lutetium
2218	LUCA	Last Universal Common Ancestor
2219	LUG	Linux User Group
2220	LULU	Locally Unwanted Land Use (urbanism)
2221	LUX	Luxembourg (ISO 3166 trigram)
2222	LVA	Latvia (ISO 3166 trigram)
2223	LVEF	Left Ventricular Ejection Fraction
2224	Lw	Lawrencium (obsolete 1963)
2225	LWR	Laser warning receiver
2226	LWRC	Land Warfare Resources Corporation
2227	LWS	Land Warrior System
2228	LX	Electrics (theatrical term)
2229	LYAO	Laugh Your Ass Off
2230	LYLAS	Love You Like A Sister
2231	Ma	Megaannum
2232	mA	Milliampere
2233	MAA	Mathematical Association of America
2234	MAAC	Metro Atlantic Athletic Conference
2235	MACE	Multi-Agent Computing Environment
2236	MACHO	MAssive Compact Halo Object
2237	MAF	Maintenance Action Form
2238	MAGIC	Major Atmospheric Gamma-ray Imaging Cherenkov (telescope)
2239	MAGNETAR	Metaprogrammable AGent NETwork ARchitecture
2240	MAGTF	Marine Air-Ground Task Force
2241	MALD	Miniature Air-Launched Decoy
2242	MANPADS	MAN-Portable Air Defence System
2243	MANPRINT	MANpower and PeRsonnel INTegration
2244	MAO	Molėtų astronomijos observatorija (Moletai Astronomical Observatory),MonoAmine Oxidase
2245	MAOI	Monoamine oxidase inhibitor
2246	MAPS	Monitoring Avian Productivity and Survivorship
2247	MAR	Morocco (ISO 3166 trigram)
2248	MarBEF	Marine Biodiversity and Ecosystem Functioning
2249	MARCENT	United States Marine Forces Central Command
2250	MARFORCC	Marine Force Component Commander
2251	MASAS	Monte Agliale Supernovae and Asteroid Survey
2252	Maser	Microwave Amplification by Stimulated Emission of Radiation
2253	MASH	Mobile Army Surgical Hospital
2254	MASINT	Measurement And Signature Intelligence
2255	MAVS	Mobile Artillery Vehicle System
2256	MBBL	(U.S. Armor Center) Mounted Battlespace Battle Laboratory
2257	MBCC	Migratory Bird Conservation Commission (U.S.)
2258	MBCS	Multi-Byte Character Set
2259	MBI	Moody Bible Institute
2260	MBIDST	Member of the British Institute of Dental and Surgical Technologists
2261	MBM	Meat and Bone Meal
2262	MBT	Main Battle Tank
2263	MBTI	Myers-Briggs Type Indicator
2264	mC	Millicoulomb
2265	MCDL	Model Composition Definition Language
2266	MCFT	Modified Compression Field Theory
2267	MCG	Melbourne Cricket Ground
2268	MCIS	Mellon Collie and the Infinite Sadness
2269	MCM	Mine Counter-Measures
2270	MCMV	Mine Counter-Measure Vessel
2271	MCR	My Chemical Romance
2272	MCSF	Marine Corps Security Forces
2273	MCT	Movement Control Team
2274	MCTIS	Mounted Co-operative Target Identification System
2275	Md	Mendelevium
2276	MDNA	Madonna's 12th studio album title (2012)
2277	MDO	Membership Driven Organisation
2278	MDP	Markov Decision Process
2279	MDT	Mountain Daylight Time (UTC-6 hours)
2280	MDV	Maldives (ISO 3166 trigram)
2281	Me	Messerschmitt
2282	MEAC	Mid-Eastern Athletic Conference (ME-ac)
2283	MECO	Main engine cutoff (NASA code for point in Space Shuttle assent when three main engines are shut down prior to External Tank (ET) separation)
2284	MEDEVAC	Medical evacuation
2285	MEDS	Mission Essential Data Set
2286	MEG	MagnetoEncephaloGraphy
2287	MELT	Metallic Line/Loop Test (ing)
2288	MEMS	Microelectromechanical System
2289	MER	Mars Exploration Rover
2290	MERL	Mitsubishi Electric Research Laboratories
2291	MES	Manufacturing Execution Systems
2292	METAR	[Meteorological] Aviation Routine weather report
2293	METOC	Meteorological and Oceanographic
2294	MeV	Megaelectronvolt
2295	MEX	Mexico (ISO 3166 trigram)
2296	MEZ	Missile Engagement Zone
2297	mF	Millifarad
2298	MGPAM	My Gym Partner's a Monkey
2299	MGS	Mobile Gun System
2300	mH	Millihenry
2301	MHC	Major Histocompatibility Complex
2302	MHHW	Mean Higher High Water (nautical charts)
2303	MHL	Marshall Islands (ISO 3166 trigram)
2304	MHLW	Mean Higher Low Water (nautical charts)
2305	MHRA	(UK) Medicines and Healthcare products Regulatory Agency
2306	MHW	Mean High Water (nautical charts)
2307	MHWN	Mean High Water Neaps (nautical charts)
2308	MHWS	Mean High Water Springs (nautical charts)
2309	MHz	Megahertz
2310	Mi	Mebi
2311	MIA	Missing In Action
2312	MICLIC	Mine Clearing Line Charge
2313	MICOM	Missile Command
2314	MID	Midway Islands (ISO 3166 trigram; obsolete 1986)
2315	MIDAS	Man-machine Integration Design and Analysis System
2316	MIDI	Musical Instrument Digital Interface
2317	MIDS	Multi-Function Information Distribution System
2318	MIFG	Shallow Fog (METAR Code)
2319	MIKE	Monitoring of Illegal Killing of Elephants
2320	MIL	Man-In-the-Loop
2321	MILC	Mirrorless interchangeable-lens camera
2322	MILF	Mother I'd Like to Fuck
2323	MIMOSA	MIcroMeasurements Of Satellite Acceleration
2324	MIMPT	Member of the Institute of Maxillofacial Prosthetists and Technologists
2325	MIRA	MILAN Infra-Red Acquisition (thermal sight)
2326	MIRV	Multiple Independent Reentry Vehicle
2327	MISREP	Mission Report
2328	MISSI	Multilevel Information System Security Initiative
2329	MITL	Man-In-The-Loop
2330	MITS	see entry
2331	mJ	Millijoule
2332	MJD	Modified Julian Day
2333	mK	Millikelvin
2334	MKG	Michael Kidd-Gilchrist (American basketball player)
2335	MKSA	Metre-Kilogram-Second-Ampere (system of units)
2336	mL	Millilitre
2337	MLB	Major League Baseball
2338	MLC	Member of the Legislative Council (in India)
2339	MLE	Maximum likelihood estimation
2340	MLHW	Mean Lower High Water (nautical charts)
2341	MLI	Mali (ISO 3166 trigram)
2342	MLL	Major League Lacrosse
2343	MLLW	Mean Lower Low Water (nautical charts)
2344	MLP	My Little Pony
2345	MLRS	Multiple-Launch Rocket System
2346	MLT	Malta (ISO 3166 trigram)
2347	MLW	Mean Low Water (nautical charts)
2348	MLWN	Mean Low Water Neaps (nautical charts)
2349	MLWS	Mean Low Water Springs (nautical charts)
2350	Mm	Megametre
2351	mm	Millimetre
2352	MMEV	Multi-Mission Effects Vehicle
2353	MMI	Magical MonkeyZ Inc.
2354	MMI	Man-Machine Interface
2355	MMI	McLean Meditation Institute
2356	MMIC	McLean Meditation Institute Certified
2357	MMO	Massively Multiplayer Online (computer game)
2358	MMOR	Master of Management in Operations Research
2359	MMORPG	Massively multiplayer online role-playing game
2360	MMPR	Mighty Morphin Power Rangers
2361	MMS	Multimission Modular Spacecraft
2362	Mn	Manganese
2363	mN	Millinewton
2364	MNB	Multinational Brigade
2365	MNE	Montenegro (ISO 3166 trigram)
2366	MNMF	Multi-National Maritime Force
2367	MNP	Northern Mariana Islands (ISO 3166 trigram)
2368	MNS	Mission Needs Statement
2369	Mo	Molybdenum
2370	MOA	Museum of Art (Brigham Young University)
2371	MOCAS	Mechanization Of Contract Administration Services
2372	MoD	Ministry of Defence (United Kingdom) and various other countries
2373	modem	Modulator-Demodulator
2374	Moe	Marvel of entertainment
2375	MOE	Measure Of Effectiveness
2376	MOF	Ministry of Finance (Japan)
2377	MOFA	Ministry of Foreign Affairs (Japan)
2378	MOID	Minimum Orbital Intersection Distance
2379	MOJWA	Movement for Oneness and Jihad in West Africa
2380	MOLO	Mobile Other Licensed Operator (UK)
2381	MOM	Master's Degree in Oriental medicine
2382	MOM	Message Oriented Middleware
2383	MoM	Multiple of the median
2384	MoMA	Museum of Modern Art (NYC)
2385	MOND	Modified Newtonian Dynamics
2386	MOO	Measure Of Outcome
2387	MOPP	Mission-Oriented Protective Posture
2388	MORP	Meteorite Observation and Recovery Project
2389	MOSFET	Metal-Oxide-Semiconductor Field-Effect Transistor
2390	MOT	Ministry of Transport (UK)
2391	MOTA	Member of the Orthodontic Technicians Association
2392	MOTESS	Moving Object and Transient Event Search System
2393	MOU	Memorandum Of Understanding
2394	MOW	Maintenance of way (also MW)
2395	MOZ	Mozambique (ISO 3166 trigram)
2396	MPa	Megapascal
2397	mPa	Millipascal
2398	MPAA	Motion Picture Association of America
2399	MPEC	Minor Planet Electronic Circular
2400	MPEG	Motion Pictures (Coding) Experts Group
2401	MPEV	Multi-Purpose Engineering Vehicle
2402	MPF	Maritime Prepositioning Force
2403	MPFC	Medial PreFrontal Cortex
2404	MPG	Miles Per Gallon
2405	MPMC	Medial PreMotor Cortex
2406	MPSI	Member of the Pharmaceutical Society of Ireland
2407	MPSoC	MultiProcessor System-on-Chip
2408	MPSRON	Maritime Propositioning Ship Squadron
2409	MR	Mauritania (FIPS 10-4 country code; ISO 3166 digram)
2410	MRAV	Multi-Role Armoured Vehicle
2411	MRBM	Medium Range Ballistic Missile
2412	MRC	Maintenance Requirements Card
2413	MRD	Motorized Rifle Division
2414	MRGW	Medium-Range Guided Weapon
2415	MRI	Magnetic Resonance Imaging
2416	MRL	Multiple Rocket Launcher
2417	MRPharmS	Member of the Royal Pharmaceutical Society (Great Britain)
2418	MRS	Magnetic Resonance Spectroscopy
2419	MRSA	Methicillin-resistant Staphylococcus aureus
2420	MRTFB	U.S. Major Range and Test Facility Base
2421	Ms	Megasecond
2422	mS	Millisiemens
2423	MSD	Minimum Safe Distance
2424	MSDB	Multi Source Data Base
2425	MSE	Multiple Subscriber Element
2426	MSG	Message
2427	MSLP	Mean Sea Level Pressure
2428	MSNBC	Microsoft National Broadcasting Company Cable news channel (see also msnbc.com)
2429	MSO	Multiple System Operator
2430	MSPB	Merit Systems Protection Board
2431	MSSA	Methicillin-susceptible Staphylococcus aureus
2432	Mt	Meitnerium
2433	mT	Millitesla
2434	MTBF	Mean time between failures
2435	MtF	Male-to-female transsexual
2436	MTG	Magic: The Gathering
2437	MTQ	Martinique (ISO 3166 trigram)
2438	MTT	Methylthiazol tetrazolium (assay)
2439	MTWS	MAGTF Tactical Warfare System
2440	MUS	Mauritius (ISO 3166 trigram)
2441	mV	Millivolt
2442	MVC	Missouri Valley Conference
2443	MVFC	Missouri Valley Football Conference
2444	MVNO	Mobile virtual network operator
2445	mW	Milliwatt
2446	MWESH	Machismo Wizards Extended SHelter (operating system)
2447	MWI	Malawi (ISO 3166 trigram)
2448	MWOA	Mount Wilson Observatory Association
2449	MWTB	Mounted Warfare Test Bed
2450	MY	Malaysia (FIPS 10-4 country code; ISO 3166 digram)
2451	MYOB	Mind Your Own Business
2452	MYS	Malaysia (ISO 3166 trigram)
2453	MYT	Mayotte (ISO 3166 trigram)
2454	n	Nano
2455	N3F	National Fantasy Fan Federation
2456	nA	Nanoampere
2457	Na	Sodium (Latin Natrium)
2458	NAA	N-Acetylaspartate
2459	NAAD	North American Air Defense
2460	NAAQS	National Ambient Air Quality Standards
2461	NAAWS	NATO Anti-Air Warfare System
2462	NAC	National Agency Check,U.S. Naval Avionics Center,U.S. Navy Advanced Concepts,North Atlantic Council,Northern Area Command
2463	NACC	North Atlantic Cooperation Council
2464	NACISA	NATO Communications and Information Systems Agency
2465	NACMA	NATO Air Command and Control System Management Agency
2466	NACRA	North America Caribbean Rugby Association (more specifically rugby union)
2467	NAEC	U.S. Naval Air Engineering Center
2468	NAFERA	Native American Free Exercise of Religion Act
2469	NAFLD	NonAlcoholic Fatty Liver Disease
2470	NAFO	Northwest Atlantic Fisheries Organization
2471	NAFTA	North American Free Trade Agreement
2472	NAGPRA	Native American Graves Protection and Repatriation Act
2473	NAICS	North American Industry Classification System
2474	NAIL	Neurotics Anonymous
2475	NAILS	National Airspace Integrated Logistics System
2476	NAIRU	Non Accelerating Inflation Rate of Unemployment
2477	NAK	Negative Acknowledge
2478	NAM	Namibia (ISO 3166 trigram)
2479	NAMBLA	North American Man-Boy Love Association
2480	NAMRL	Naval Aerospace Medical Research Laboratory
2481	NaN	Not A Number (computing)
2482	NAO	UK National Audit Office
2483	NAPS	Navy Acquisition Procedures Supplement
2484	NARA	(U.S.) National Archives and Records Administration
2485	NARAL	National Abortion Rights Action League
2486	NARDAC	Naval Regional Data Automation Center
2487	NARDIC	U.S. Navy Acquisition Research and Development Information Center
2488	NARPV	National Association for Remotely Piloted Vehicles
2489	NASCAR	National Association for Stock Car Auto Racing
2490	NASDAQ	National Association of Securities Dealers Automated Quotations
2491	NASED	National Association of State Election Directors [1][2]
2492	NASH	Non-Alcoholic Steatohepatitis
2493	NASP	National Aerospace Plane
2494	NASS	National Association of Secretaries of State [3]
2495	NatGeo	National Geographic
2496	NaUKMA	National University of Kyiv-Mohyla Academy
2497	NAV	Navigation[al]
2498	NAVCAMS	Naval Communications Area Master Station
2499	NAVCC	National Audio-Visual Conservation Center
2500	NAVCENT	Naval Forces U.S. Central Command
2501	NAVDAC	Naval Data Automation Command
2502	NAVEUR	Naval Forces U.S. European Command
2503	NAVFOR	Naval Force
2504	NAVMACS	Naval Modular Automatic Communication Subsystem
2505	NAVNET	Navy Network
2506	NAVS	Non-Cooperative Airborne Vector Scoring
2507	NAVSAT	Navigation Satellite
2508	NAVSPACECOM	U.S. Navy Space Command
2509	NAVSPASUR	U.S. Naval Space Surveillance System
2510	NAVSTAR	Navigation Satellite Timing And Ranging
2511	NAVTACNET	Navy Tactical Network
2512	NAWC	U.S. Naval Air Warfare Center
2513	Nb	Niobium
2514	NBA	National Basketball Association
2515	NBL	National Basketball League (Australia)
2516	NBT	Nitroblue tetrazolium (assay)
2517	nC	Nanocoulomb
2518	NCA	National Command Authority
2519	NCAR	U.S. National Center for Atmospheric Research
2520	NCB	National Codification Bureau
2521	NCCAM	U.S. National Center for Complementary and Alternative Medicine
2522	NCCUSL	National Conference of Commissioners on Uniform State Laws (U.S.)
2523	NCDDR	U.S. National Center for the Dissemination of Disability Research
2524	NCI	U.S. National Cancer Institute
2525	NCL	New Caledonia (ISO 3166 trigram)
2526	NCLR	National Council of La Raza
2527	NCMO	No Commitment Make Out
2528	NCO	Non-Commissioned Officer
2529	NCP	Net Contracted Purchases
2530	NCR	National Cash Register Co.
2531	NCTR	Non-Co-operative Target Recognition
2532	NCW	Network Centric Warfare
2533	Nd	Neodymium
2534	NDAA	U.S. National Defense Authorization Act
2535	NDBP	Non-Departmental Public Body (Scotland)
2536	NDP	New Democratic Party (Canada)
2537	NDS	Nintendo DS
2538	Ne	Neon
2539	NECTEC	National Electronics and Computer Technology Center (Thailand)
2540	NEMS	National Energy Modeling System (USDOE-EIA)
2541	NEPA	National Environmental Policy Act
2542	NER	Niger (ISO 3166 trigram)
2543	NERICA	New Rice for Africa
2544	NESP	NSA/CSS Enterprise Standards Program
2545	NET	National Educational Television
2546	NETCU	(UK) National Extremism Tactical Co-ordination Unit
2547	NETL	(US) National Energy Technology Laboratory
2548	NETWARS	Network Warfare Simulation
2549	NEX	Navy EXchange
2550	nF	Nanofarad
2551	NF	Norfolk Island (ISO 3166 digram)
2552	NFER	National Foundation for Educational Research
2553	NFG	No Fucking Good
2554	NFHS	National Federation of State High School Associations
2555	NFI	Not F****** Interested
2556	NFK	Norfolk Island (ISO 3166 trigram)
2557	Nfld	Newfoundland
2558	NFPA	National Fluid Power Association (United States)
2559	NFT	No Further Text
2560	NGATS	New Generation Army Targetry System
2561	NGH	Northern General Hospital
2562	NGO	non-governmental organization
2563	NGS	Naval Gunfire Support
2564	nH	Nanohenry
2565	NHANES	National Health and Nutrition Examination Survey
2566	NHB	New Hebrides (ISO 3166 trigram; obsolete 1980)
2567	NHB	No Holds Barred radio (Link)
2568	NHL	National Hockey League
2569	NHRA	National Hot Rod Association
2570	NHS	National Health Service (UK)
2571	Ni	Nickel
2572	NIAAA	U.S. National Institute on Alcohol Abuse and Alcoholism
2573	NIAG	NATO Industrial Advisory Group
2574	NIAID	National Institute of Allergies and Infectious Disease
2575	NIAMD	National Institute of Arthritis and Musculoskeletal Diseases
2576	NIB	New In Box (Internet auction/trading listings)
2577	NIBP	Non-invasive blood pressure monitor
2578	NicA	Nicotine Anonymous
2579	NICAP	National Investigations Committee on Aerial Phenomena
2580	NICE	UK. National Institute for Health and Clinical Excellence
2581	NICHD	National Institute of Child Health and Human Development [4]
2582	NICP	National Inventory Control Point
2583	NIDDK	National Institute of Diabetes and Digestive and Kidney Diseases
2584	NIDRR	National Institute on Disability Research and Rehabilitation
2585	NIEHS	National Institute of Environmental Health Sciences
2586	NIIN	National Item Identification Number
2587	NIMA	National Imagery and Mapping Agency (became NGA)
2588	NIMBY	Not In My Back Yard (See NOME)
2589	NIMG	Not In My Generation
2590	NIN	Nine Inch Nails (band)
2591	NIPR	National Institute of Polar Research (Japan)
2592	NIR	Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
2593	NISAC	U.S. National Infrastructure Simulation and Analysis Center
2594	NISCAP	NSA Information System Certification and Accreditation Program
2595	NISER	National Institute of Science Education and Research
2596	NIST	National Institute of Standards and Technology
2597	NITFS	National Imagery Transmission Format Standard
2598	NIU	Niue (ISO 3166 trigram)
2599	nJ	Nanojoule
2600	NJ	New Jersey (postal symbol)
2601	NJHS	National Junior Honor Society
2602	NJPW	New Japan Pro Wrestling
2603	nK	Nanokelvin
2604	NKA	No Known Allergies
2605	nL	Nanolitre
2606	NLB	Non-Linear Battlefield
2607	NLD	Netherlands (ISO 3166 trigram)
2608	NLF	National Liberation Front (disambiguation)
2609	NLL	National Lacrosse League
2610	NLW	Non-Lethal Weapon
2611	nm	Nanometre
2612	NM	New Mexico (postal symbol)
2613	NMCI	Navy Marine Corps Intranet
2614	NMCS	Not Mission Capable Supply (SM&R code)
2615	NMD	U.S. National Missile Defense
2616	NMN	No middle name
2617	NMR	Nuclear Magnetic Resonance
2618	NMSG	NATO Modelling and Simulation Group
2619	nN	Nanonewton
2620	NNE	North North-East
2621	NNSA	U.S. National Nuclear Security Administration
2622	NNW	North North-West
2623	No	Nobelium
2624	NOAA	U.S. National Oceanic and Atmospheric Administration
2625	NOAF	Norwegian Air Force
2626	NOAO	National Optical Astronomy Observatory
2627	NOC	UK. National Oceanography Centre
2628	NODEF	NATO Oceanographic Data Exchange Format
2629	NOGI	New Orleans Grande Isle (award for diving)
2630	NOLF	Navy OutLying Field
2631	NOME	Not on Mars Either
2632	NOME	Not on Mars Either (see NIMBY)
2633	NOR	Norway (ISO 3166 trigram)
2634	NORELPREF	No religious preference
2635	NORTHAG	Northern Army Group
2636	NOSA	NATO OSI Security Architecture
2637	NOTAFLOF	No One Turned Away For Lack Of Funds
2638	NOW	National Organization for Women
2639	NP	Nepal (ISO 3166 and FIPS 10-4 country code digram)
2640	NPB	Nippon Professional Baseball
2641	NPCS	Non-Passenger Coaching stock (in Railways)
2642	NPD	Nationaldemokratische Partei Deutschlands (German)
2643	NPDI	New Product Development and Introduction
2644	NPG	Needline/Network Participation Group
2645	NPH	Normal Pressure Hydrocephalus
2646	NPO	nothing by mouth
2647	NPOV	Neutral Point Of View
2648	NQ	Dronning Maud Land (ISO 3166 digram; obsolete 1983)
2649	NR	Nauru (ISO 3166 and FIPS 10-4 country code digram)
2650	NRA	National Rifle Association
2651	NRAO	National Radio Astronomy Observatory
2652	NRDC	(U.S.) Natural Resources Defense Council
2653	NREL	U.S. National Renewable Energy Laboratory
2654	NRK	Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
2655	NRMP	National Resident Matching Program (U.S. medicine)
2656	NRO	U.S. National Reconnaissance Office
2657	NRT	Near Real Time
2658	NRU	Nauru (ISO 3166 trigram)
2659	ns	Nanosecond
2660	nS	Nanosiemens
2661	NSABB	National Science Advisory Board for Biosecurity
2662	NSAID	Non-Steroidal Anti-Inflammatory Drug
2663	NSB	Norges Statsbaner (Norwegian State Railways)
2664	NSC	National Security Council
2665	NSDL	National Science Digital Library (US)
2666	NSG	National System for Geospatial-Intelligence
2667	NSN	National Stock Number
2668	NSNA	National Student Nurses' Association
2669	NSO	National Standardization Office (ABCA)
2670	NSS	(U.S.) Naval Simulation System
2671	NST	(UK) Nimrod Software Team
2672	NSTAC	National Security Telecommunications Advisory Committee
2673	NSW	New South Wales (postal symbol)
2674	nT	Nanotesla
2675	NTDS	Naval Tactical Data System
2676	NTP	Network Time Protocol
2677	NTR	Network Time Reference
2678	NTRA	National Thoroughbred Racing Association
2679	NTSB	National Transportation Safety Board
2680	NTV	Non-Tactical Vehicle
2681	NTY	(Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
2682	NTZ	Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)
2683	NUTS	Nuclear Utilization Target Selection
2684	NUWC	U.S. Naval Undersea Warfare Center
2685	nV	Nanovolt
2686	NVEOL	Night Vision and Electro-Optics Laboratory
2687	NVG	Night Vision Goggles
2688	NVL	Night Vision Laboratory
2689	nW	Nanowatt
2690	NW	North-West
2691	NW	Nuclear Weapon
2692	NWA	National Wrestling Alliance
2693	NWF	National Wildlife Federation
2694	NWFZ	Nuclear-Weapon-Free Zone
2695	NWHN	U.S. National Women's Health Network
2696	nWo	New World Order (see article for explanation of idiosyncratic capitalization)
2697	NWOAHM	New Wave of American Heavy Metal
2698	NWOBHM	New Wave of British Heavy Metal (sometimes pronounced /n.ˈwɒbm/ as if it were an acronym)
2699	NWRA	National Wildlife Rehabilitators Association
2700	NWSL	National Women's Soccer League (U.S.)
2701	NWT	North-West Territories
2702	NXA	21st arcade game in the Pump It Up series
2703	NXD	Native XML
2704	NXE	New Xbox Experience
2705	NXG	New Cross Gate station
2706	NXL	National XBall League
2707	NXN	Nike Cross Nationals
2708	NY	New York (postal symbol)
2709	NYC	New York City
2710	NYHA	New York Heart Association
2711	NYO	National Youth Orchestra of Great Britain
2712	NYSE	New York Stock Exchange
2713	NZ	New Zealand (ISO 3166 and FIPS 10-4 country code digram)
2714	NZC	New Zealand Cricket
2715	NZL	New Zealand (ISO 3166 trigram)
2716	NzL	Noze looan (online/event listings)
2717	NZOSS	New Zealand Open Source Society
2718	NZRU	New Zealand Rugby Union
2719	OAC	On Approved Credit
2720	OAP	Old Age Pensioner (UK)
2721	OARSI	Osteoarthritis Research Society International
2722	OAS	Organization of American States
2723	OASIS	Ontario Agencies Supporting Individuals with Special Needs
2724	OASIS	Ontario Association of Sewage Industry Services
2725	OASP	Operational Analysis Support Paper/Plan
2726	OAU	Organization for African Unity
2727	OBE	Officer of the Order of the British Empire
2728	OBX	Outer Banks (North Carolina)
2729	OC	Officer Commanding
2730	OCD	Obsessive-Compulsive Disorder
2731	OCFS	Oracle Cluster File System
2732	OCFS2	Oracle Cluster File System Release 2
2733	OCMCC	[2] Orchard County MCC
2734	OCN	Oncology Certified Nurse
2735	OCO	Oort Cloud Object
2736	OCR	Optical Character Recognition
2737	OCS	see entry
2738	ODAS	OCA-DLR Asteroid Survey
2739	ODBC	Open DataBase Connectivity
2740	OEA	(U.S.) Office of Economic Adjustment
2741	OECD	Organisation for Economic Co-operation and Development (international)
2742	OED	Oxford English Dictionary
2743	OEG	Operation Exposure Guidance
2744	OEIS	On-Line Encyclopedia of Integer Sequences
2745	OEM	Original Equipment Manufacturer
2746	OFA	Occipital Face Area
2747	OFDA	U.S Agency for International Development's Office of Foreign Disaster Assistance
2748	OGC	Open Geospatial Consortium
2749	OGD	Other Government Department
2750	OGO	Other Government Organization
2751	OH	Ohio (postal symbol)
2752	OHC	OverHead-Cam engine
2753	OHHLA	Original Hip-Hop Lyrics Archive
2754	OHIP	Ontario Health Insurance Plan
2755	OHMS	On Her (or His) Majesty's Service (also written: O.H.M.S.)
2756	OHP	Observatoire de Haute-Provence
2757	OHSS	Ovarian Hyperstimulation Syndrome
2758	OIC	Officer In Charge
2759	OIF	Operation Iraqi Freedom
2760	OIOC	Oriental & India Office Collections (in the British Library)
2761	OJT	On-the-Job Training
2762	OKC	Oklahoma City
2763	OLED	Organic Light-Emitting Diode
2764	OLS	Operational Linescan System
2765	OMD	Orchestral Manoeuvres in the Dark (1980s pop group)
2766	OME	Osaka Mercantile Exchange
2767	OMFG	Oh My Fucking God
2768	OMG	Oh My God or Or My Gosh
2769	OMGW	Oh My Gosh it's Windy
2770	OMN	Oman (ISO 3166 trigram)
2771	OMNCS	U.S. Office of the Manager for the National Communications System
2772	OMP	Order of Mapungubwe in Platinum
2773	OMS	Order of Mapungubwe in Silver
2774	OMT	Object Model Template
2775	ON	Ontario (postal symbol)
2776	ONC	Orthopaedic Nurse Certified
2777	ONG	Orthodontic National Group
2778	ONI	(U.S.) Office of Naval Intelligence
2779	ONS	Operational Needs Statement
2780	OOAD	Object Oriented Analysis and Design
2781	OOBE	Out-of-body experience
2782	OOCL	Orient Overseas Container Line
2783	OODA	Observation,Orientation,Decision,Action loop (a.k.a. Boyd's Loop)
2784	OOF	Out of Facility
2785	OOMF	One Of My Followers
2786	OOO	Out Of the Office
2787	OOTW	Operations Other Than War
2788	OP	Observation Point/Post,Ocean Pacific (surfwear and swimwear brand),Original Poster (internet),Order Point,in inventory management; the inventory state at which more items should be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items),Overpowered,often used to refer to fictional characters (e.g. Superman) or game mechanics (e.g. the Black Lotus in Magic: the Gathering) that are considered disproportionately strong
2789	OPAC	Online Public Access Catalogue
2790	OPCON	Operational control
2791	OPCW	Organisation for the Prohibition of Chemical Weapons
2792	OPEC	Organization of the Petroleum Exporting Countries
2793	OPFOR	Opposing force
2794	OPINTEL	Operational Intelligence
2795	OPLAN	Operation plan (also OpPlan)
2796	OPORD	Operation order
2797	OPSEC	Operations security,Open Platform for Security
2798	OPSI	Overwhelming post splenectomy infection,UK Office of Public Sector Information
2799	OPTAR	Operational target
2800	OPV	Offshore Patrol Vessel
2801	OQ	Order Quantity,in inventory management; the quantity of new items to be ordered. Often expressed as a part of OP/OQ (when quantity OP is reached,order OQ new items)
2802	OR	Operating Room (surgery),Operational/Operations Research,Oregon (postal symbol),overreciprocation,when the leader of an inner circle friendship contacts a friend more than is wanted or reasonable
2803	ORAU	Oak Ridge Associated Universities
2804	ORB	Object Request Broker
2805	ORBAT	Order of Battle
2806	ORD	Office of Research and Development,Operational Requirements Document
2807	ORF	Operational iness Float
2808	ORISE	Oak Ridge Institute for Science and Education
2809	ORNL	Oak Ridge National Laboratory
2810	ORR	Oak Ridge Reservation (U.S. DOE),Office of Rail Regulation (UK government),Office of Refugee Resettlement,(CIA) Office of Research and Reports,Operational iness Rate,Operational iness Review
2811	ORSA	Oxacillin-resistant Staphylococcus aureus,Operations Research Society of America
2812	OS	Operating System
2813	Os	Osmium
2814	OSA	Order of St. Augustine
2815	OSCE	Organisation for Security and Cooperation in Europe
2816	OSD	U.S. Office of the Secretary of Defense,On-screen Display
2817	OSDL	Open Source Development Labs
2818	OSE	Own Separate Entrance
2819	OSERS	U.S. Department of Education Office of Special Education and Rehabilitative Services
2820	OSETI	Optical SETI also Optical SETI
2821	OSHA	Occupational Safety and Health Administration
2822	OSI	Office of Strategic Influence,Ontario Swine Improvement,Open Source Initiative,Open Systems Interconnection
2823	OSIA	(U.S.) On-Site Inspection Agency
2824	OSIRIS	Optical,Spectroscopic,and Infrared Remote Imaging System (astronomical system on the Rosetta spacecraft),Optical System for Imaging and low Resolution Integrated Spectroscopy (astronomical system on the land-based Gran Telescopio Canarias)
2825	OSL	Open Source License, Optically Stimulated Luminescence, Orbiting Solar Laboratory
2826	OSM	One Saturday Morning
2827	OSOTPBOIAS	One Sec,On The Phone,Be Off In A Sec
2828	OSPA	Operations Security Professional's Association site of OSPA
2829	OSPA	Oregon School Psychologists Association [3]
2830	OSRH	Oružane Snage Republike Hrvatske (en: Armed forces of the Republic of Croatia)
2831	OSU	Ohio State University,Oklahoma State University
2832	OTA	Office of Technology Assessment, Orthodontic Technicians Association
2833	OTAC	Orthodontic Technicians Association Conference,Orthodontic Technicians Association Council
2834	OTC	Over-The-Counter (drugs)
2835	OTD	Off the derech (referring to an Orthodox Jew who has stopped practicing the tenets of his or her faith)
2836	OTEA	(U.S. Army) Operational Test Evaluation Agency
2837	OTI	Office of Transition Initiatives (United States Agency for International Development)
2838	OTOH	On The Other Hand
2839	OTS	Off the scale,sexually untouchable except for a lot of money
2840	OTSBH	Over The Shoulder Boulder Holder
2841	OTW	On The Way
2842	OTYBL	Over To You Blue Leader
2843	OTYRL	Over To You Red Leader
2844	OU	University of Oklahoma
2845	OW	Old Wykehamist
2846	OWN	Oprah Winfrey Network
2847	OX	IATA code for Orient Thai Airlines
2848	OXC	Optical cross-connect
2849	OXM	Official Xbox Magazine
2850	OXT	Oxytocin
2851	OZ	(?) Australia
2852	p	pico
2853	P2P	Peer-to-peer (networking)
2854	pA	picoampere
2855	PAA	Position Area for Artillery
2856	PABX	Private Automated Branch eXchange (company phone system)
2857	PACOM	(U.S.) Pacific Command
2858	PADI	Professional Association of Diving Instructors
2859	PAEK	PolyArylEtherKetone
2860	PAFC	Plymouth Argyle Football Club
2861	PAH	Polycyclic aromatic hydrocarbon
2862	PAHO	Pan American Health Organization
2863	PAK	Pakistan (ISO 3166 trigram)
2864	PAM	Precision Attack Missile
2865	PANS	Pretty Advanced/Awesome Network Services (cf. POTS)
2866	PARC	Palo Alto Research Center
2867	PAROS	Prevention of an Arms Race in Outer Space (treaty)
2868	PARP	(NATO Partnership for Peace) Planning And Review Process
2869	PARWIG	Power Augmented Ram Wing In Ground (aeroplane wing shape)
2870	PAS	See entry
2871	PASR	Personnel Accounting and Strength Reporting
2872	PATH	Port Authority Trans-Hudson
2873	PAYD	Pay As You Drive
2874	PAYE	Pay As You Earn
2875	Pb	Lead (Latin Plumbum)
2876	PB	PolyButylene
2877	PBB	PolyBrominated Biphenyl
2878	PBCK	Problem Between Chair and Keyboard (computer help desk in-joke)
2879	PBD	PolyButaDiene
2880	PBDE	PolyBrominated Diphenyl Ether
2881	PBI	PolyBenzImidazole
2882	PBN	PolyButylene Naphthalate
2883	PBOH	Please Become Old History
2884	PBT	PolyButylene Terephthalate
2885	PBX	Private Branch eXchange (company phone system)
2886	pC	picocoulomb
2887	PCAS	Planet-Crossing Asteroid Survey
2888	PCB	see entry
2889	PCCB	Porsche Ceramic Composite Brake
2890	PCCIP	President's Commission on Critical Infrastructure Protection
2891	PCE	PerChlorEthylene
2892	PCIe	Peripheral Component Interconnect Express (computer bus)
2893	PCL	Passive Coherent Location
2894	PCMCIA	Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms)
2895	PCN	Pitcairn Islands (ISO 3166 trigram)
2896	PCPI	Physician Consortium for Performance Improvement (AMA)
2897	PCR	Polymerase chain reaction
2898	PCSSD	Pulaski County Special School District
2899	PCZ	Panama Canal Zone (ISO 3166 trigram; obsolete 1980)
2900	Pd	Palladium
2901	PD	Product Director—Example: CERDEC Product Director C4ISR and Network Modernization
2902	PDL	Pure Dumb Luck (Texan punk band)
2903	PDN	Pull-Down Network
2904	PDRY	People's Democratic Republic of Yemen (obsolete since 1990)
2905	PDT	Pacific Daylight [Saving] Time (UTC-7 hours)
2906	PE	Professional Engineer
2907	PEBCAC	Problem Exists Between Chair and Computer (IT help desk in-joke)
2908	PEBKAC	Problem Exists Between Keyboard and Chair (ditto)
2909	PEEK	PolyEtherEtherKetone
2910	PEET	Partnerships for Enhancing Expertise in Taxonomy
2911	PEK	PolyEtherKetone
2912	PEPFAR	President's Emergency Plan For AIDS Relief
2913	PER	Peru (ISO 3166 trigram)
2914	perl	usually lower case Practical Extraction and Report Language
2915	PES	PolyEtherSulfone
2916	PEST	UK Public Engagement with Science and Technology
2917	PETE	PolyEthyleneTErephthalate
2918	PETP	PolyEthyleneTerePhthalate
2919	pF	picofarad
2920	PFD	Permanent Fund Dividend = personal flotation device
2921	PFE	Permanent Forest Estate
2922	PfP	Partnership for Peace
2923	Pg	petagram
2924	pg	picogram
2925	PGCE	Postgraduate Certificate in Education
2926	PGD	Pre-implantation Genetic Diagnosis
2927	PGENI	Pharmaco-Genetics for Every Nation Initiative
2928	PGH	Pre-implantation Genetic Haplotyping
2929	PGM	Precision-Guided Munition
2930	PGP	Pretty Good Privacy
2931	PHL	Philippines (ISO 3166 trigram)
2932	PHQ	Patient Health Questionnaire
2933	Pi	Pebi
2934	PIB	PolyIsoButylene
2935	PIC	Person In Charge
2936	PICNIC	Problem In Chair Not In Computer
2937	PICS	Private Investment Capital Subscription
2938	PIF	Partners in Flight
2939	PIG	Pipeline Inspection Gauge
2940	PIN	Personal Identification Number
2941	PINF	People In Need Foundation (Czech charitable organisation)
2942	PIPA	Program on International Policy Attitudes
2943	PIR	Priority Intelligence Requirement
2944	PIRA	Provisional Irish Republican Army
2945	PIREPS	Pilot Reports
2946	PITA	Pain In The Ass
2947	PJ	petajoule
2948	pJ	picojoule
2949	PJHQ	Permanent Joint Headquarters
2950	PKE	Partnership of Kindermusik Educators [1] &[2] & [2]
2951	PKI	Public Key Infrastructure (cryptography)
2952	PKU	Phenylketonuria
2953	pL	picolitre
2954	PLAID	Precision Location and Identification
2955	PLB	Personal Locator Beacon
2956	PLC	Public Limited Company (British)
2957	PLCC	Plastic Leaded Chip Carrier (electronics)
2958	PLD	Probable Line of Deployment
2959	PLEBS	People Lacking Everyday Basic Skills
2960	PLF	Parachute Landing Fall
2961	PLIF	Planar Laser-Induced Fluorescence
2962	PLL	Phase-Locked Loop (electronics)
2963	PLM	Polarized Light Microscope/Microscopy
2964	PLMBA	Phospholipid Bilayer Microarray
2965	Pln	Platoon
2966	PLO	Palestine Liberation Organization
2967	PLOKTA	Press Lots Of Keys To Abort
2968	PLP	Platonic Life Partner
2969	PLUTO	Pipe Line Under The Ocean
2970	PLW	Palau (ISO 3166 trigram)
2971	pm	picometre
2972	PMC	Primary Motor Cortex
2973	PMI	Positive Material Identification
2974	PMID	PubMed Identifier
2975	PMMA	PolyMethylMethAcrylate
2976	PMS	Premenstrual Syndrome
2977	PMSL	Piss Myself Laughing (Internet shorthand)
2978	PMT	Premenstrual Tension (UK) (see Premenstrual Syndrome)
2979	pN	piconewton
2980	PNAC	Project for the New American Century
2981	PNVS	Pilot Night Vision Sensor
2982	Po	Polonium
2983	PO	Post Office
2984	PO	Purchase Order
2985	POCD	Post-Operative Cognitive Dysfunction
2986	pod	Plain Old Documentation
2987	POFF	Plain Old Flat File
2988	POGO	Project On Government Oversight
2989	POI	Program Of Instruction
2990	POK	Plane Of Knowledge
2991	POLAD	Political Advice
2992	POMDP	Partially observable Markov decision process
2993	PooS	Poo Sniffer (Internet shorthand)
2994	POS- Point Of Sale terminal (retail industry transaction computers)	Piece Of S**t
2995	POSH	Port Outbound Starboard Home (alleged)
2996	POSSLQ	Person of the Opposite Sex Sharing Living Quarters
2997	POT	Plane Of Tranquility
2998	POTS	Plain Old Telephone Service (cf. PANS),Postural Orthostatic Tachycardia Syndrome
2999	POTUS	President of the United States
3000	POV	Point of view
3001	POW	Prisoner of war
3002	PPASC	(U.S.) Plans and Program Analysis Support Center
3003	PPCLI	Princess Patricia's Canadian Light Infantry (regiment)
3004	PPLI	Precise Participant Location & Identification
3005	PPM	Project Planning and Management
3006	PPO	PolyPhenylene Oxide
3007	PPQN	Pulses Per Quarter Note (ditto)
3008	PPQT	Pre-Production Qualification Test
3009	PPV	Pay-per-view
3010	Pr	Pastor, Priest
3011	PR	Public Relations
3012	Prb	Presbyter
3013	PRBO	Point Reyes Bird Observatory
3014	PRC	People's Republic of China
3015	PRD	CERDEC Product Realization Directorate
3016	PRFG	Partial Fog (METAR Code)
3017	PRI	Puerto Rico (ISO 3166 trigram)
3018	PRK	Democratic People's Republic of Korea (ISO 3166 trigram)
3019	PRM	Personnel iness Management
3020	PRY	Paraguay (ISO 3166 trigram)
3021	Ps	petasecond
3022	pS	picosiemens
3023	PSG	Pacific Seabird Group
3024	PSI	Portable Source Initiative
3025	PSI	Pounds per square inch
3026	PSS	Personnel System Support
3027	PST	Pacific Standard Time (UTC-8 hours)
3028	PSU	Pennsylvania State University
3029	PsyOp	Psychological Operations
3030	pT	picotesla
3031	Pt	Platinum
3032	PTA	Parent-Teacher Association
3033	PTAL	Public Transport Accessibility Level
3034	PTES	People's Trust for Endangered Species
3035	PTFE	PolyTetraFluoroEthylene
3036	PTI	Pardon the Interruption
3037	PTSD	Post-Traumatic Stress Disorder
3038	Pu	Plutonium
3039	Pub	Publication
3040	PUG	PET Users Group
3041	PUN	Pull-Up Network
3042	PUP	Pull-Up Point
3043	PUS	United States Miscellaneous Pacific Islands (ISO 3166 trigram; obsolete 1986)
3044	PV	petavolt
3045	pV	picovolt
3046	PvE	Player versus Environment
3047	PvP	Player versus Player
3048	PVR	Personal Video Recorder
3049	PvZ	Plants vs. Zombies
3050	PW	Palau (postal symbol; ISO 3166 digram)
3051	pW	picowatt
3052	PWA	Pirates With Attitude
3053	PWBA	Pension and Welfare Benefits Administration
3054	PWC	PieceWise Constant (describing a mathematical function)
3055	PwC	PricewaterhouseCoopers (international accounting firm)
3056	PWL	PieceWise Linear (describing a mathematical function)
3057	PWLC	PieceWise Linear and Concave/Convex (describing a mathematical function)
3058	PWR	Pressurized Water Reactor
3059	PX	Post eXchange
3060	PYF	French Polynesia (ISO 3166 trigram)
3061	PYMWYMI	Put Your Money Where Your Mouth Is
3062	Q1	First Quarter
3063	Q2	Second Quarter
3064	Q3	Third Quarter
3065	Q4	Fourth Quarter
3066	QA	Qatar (FIPS 10-4 country code; ISO 3166 digram)
3067	Qantas	Queensland And Northern Territory Aerial Services
3068	QAT	Qatar (ISO 3166 trigram)
3069	QB	Quarterback (football)
3070	QCD	Quantum ChromoDynamics
3071	QDR	Quadrennial Defense Review
3072	QEH	Queen Elizabeth's Hospital
3073	QK	Air Canada Jazz (IATA airline designator)
3074	QNH	Regional mean sea level atmospheric pressure (aeronautical Q code)
3075	QPS	Quark Publishing System
3076	QSCAT	Quick Scatterometer satellite
3077	QSL	Québec Sign Language
3078	QSO	Quasi-Stellar Object
3079	Quango	(British Commonwealth) QUasi Autonomous Non-Governmental Organisation
3080	Quasar	Quasi-stellar radio source
3081	QUB	Queen's University Belfast
3082	QUIET	Q and U Imaging ExperimenT (Q and U are the Stokes parameters of the CMBR polarization)
3083	QZ	Awair (IATA airline designator)
3084	R2I	Resistance to Interrogation
3085	RA	Radio Australia
3086	Ra	Radium
3087	RAAF	Royal Australian Air Force
3088	Rabobank	Raiffeisen-Boerenleenbank (from the two banks that merged to form the modern company)
3089	RACK	Risk Aware Consensual Kink (SM phrase)
3090	Racon	RAdar beaCON
3091	RADA	Royal Academy of Dramatic Art
3092	Radar	Radio Detection And Ranging
3093	RadB	Rad51/Dmc1 homologous protein
3094	RADb	Routing Assets Data Base
3095	RADC	Region Air Defence Commander
3096	RAE	UK Royal Aircraft Establishment (-1991)
3097	RAGBRAI	Register's Annual Great Bicycle Ride Across Iowa
3098	RAM	Royal Air Maroc
3099	Ramark	RAdar MARKer
3100	RAOC	Rear Area Operation Centre
3101	RARDE	UK Royal Armament Research and Development Establishment (1962-1991)
3102	RARE	Rapid Acquisition with Relaxation Enhancement (MRI technique)
3103	RATELO	Radiotelephone Operator
3104	Rb	Rubidium
3105	RB	Running Back (football)
3106	RBI	Runs Batted In
3107	RC	see entry
3108	RCAF	Royal Canadian Air Force
3109	RCC	Rescue Co-ordination Centre
3110	RCCO	Royal Canadian College of Organists
3111	RCHA	Royal Canadian Horse Artillery (regiment)
3112	RCMP	Royal Canadian Mounted Police
3113	RD	Radio Disney
3114	RDD	Radiological Dispersion Device
3115	RDM	Remotely Delivered/Deliverable Mine
3116	RDT	Remote Digital Terminal
3117	RDV	Remote Detection Vehicle
3118	Re	Rhenium
3119	RE	Royal Engineers
3120	REACT	Remote Electronically Activated Control Technology
3121	REAM	Retired Educators Association of Minnesota
3122	RECCE	Reconnaissance
3123	REEF	Reef Environmental Education Foundation
3124	REM	Rapid Eye Movement (sleep phase),Rosicrucian Egyptian Museum
3125	REME	Royal Electrical and Mechanical Engineers
3126	RERC	Rehabilitation Engineering Research Center
3127	RESNA	Rehabilitation Engineering and Assistive Technology Society of North America
3128	REU	Réunion (ISO 3166 trigram)
3129	Rf	Rutherfordium
3130	RFD	Request for Documentation
3131	RFE	Request for Evaluation
3132	RFEF	Real Federación Española de Fútbol (Spanish for Royal Spanish Football Federation)
3133	RFF	Right of First Refusal (legal term)
3134	RFID	Radio Frequency IDentification
3135	RFL	Rugby Football League
3136	RFP	Request for Proposal
3137	RFQ	Request for Quotation
3138	RFT	Request for Tender
3139	RFU	Rugby Football Union
3140	RG	Republican Guard
3141	Rg	Roentgenium
3142	RGB	Red Green Blue (colour model)
3143	RGBI	Red Green Blue Intensity (ditto)
3144	Rh	Rhodium
3145	RH	Southern Rhodesia (ISO 3166 digram; obsolete 1980)
3146	RHIC	Relativistic Heavy Ion Collider
3147	RHLI	Royal Hamilton Light Infantry (Canadian militia regiment)
3148	RHO	Southern Rhodesia (ISO 3166 trigram; obsolete 1980)
3149	RHU	Replacement Holding Unit
3150	RI	Rhode Island (postal symbol)
3151	RIAA	Recording Industry Association of America
3152	RIBA	Royal Institute of British Architects
3153	RIFA	Red imported fire ant
3154	RILA	Retail Industry Leaders Association
3155	RIMVS	Retinal Imaging Machine Vision System
3156	RINO	Republican In Name Only[1]
3157	RISC	Reduced Instruction Set Computer
3158	RJD	Reduced Julian Day
3159	RKBA	Right to Keep and Bear Arms (Second Amendment to the United States Constitution)
3160	RKO	Radio-Keith-Orpheum Pictures
3161	RLP	Recognised [Operating/Operational] Land Picture
3162	RLS	Restless Leg Syndrome
3163	RLY	Rally Point
3164	RM	see separate disambiguation page
3165	RMC	Robert Menzies College
3166	RMDA	Records Management and Declassification Agency
3167	RMP	Recognised [Operating/Operational] Maritime Picture
3168	RN	Radio Netherlands
3169	Rn	Radon
3170	RNA	RiboNucleic Acid
3171	RNAD	Royal Naval Armaments Depot (UK)
3172	RNPS	Radio Network Planning System
3173	RNZ	Radio New Zealand
3174	RNZI	Radio New Zealand International
3175	ROA	Rate Of Ascent
3176	ROE	Rules Of Engagement
3177	ROFLOL	Rolling On the Floor Laughing Out Loud
3178	ROH	Ring of Honor
3179	ROK	Republic of Korea
3180	ROP	Render Output Pipeline
3181	ROPE	Research Opportunity and Performance Evidence
3182	ROS	Reactive Oxygen Species
3183	ROU	Romania (ISO 3166 trigram)
3184	ROV	Remotely Operated Vehicle
3185	ROZ	Restricted Operations Zone
3186	RPA	Regional Plan Association
3187	RPD	Recognition-Primed Decision-making
3188	RPF	Rwandan Patriotic Front
3189	RPL	Reverse Polish Lisp
3190	rpm	revolutions per minute
3191	RPN	reverse Polish notation
3192	rps	revolutions per second
3193	RPV	Remotely Piloted Vehicle
3194	RQ	Puerto Rico (FIPS 10-4 territory code)
3195	RRB	Railroad Retirement Board
3196	RRN	Recurrence Rate Number
3197	RRP	Recurrent Respiratory Papillomatosis
3198	RRS	Racing Rules of Sailing
3199	RRSP	Registered Retirement Savings Plan (Canada; roughly equivalent to the IRA in the U.S.)
3200	RS	Russia (FIPS 10-4 country code)
3201	RSI	Repetitive Strain Injury
3202	RSJ	Rolled Steel Joist (construction)
3203	RSN	Real Soon Now (coined by author Jerry Pournelle)
3204	RSPB	(UK) Royal Society for the Protection of Birds
3205	RSPCA	Royal Society for the Prevention of Cruelty to Animals
3206	RSR	Required Supply Rate
3207	RSRE	UK Royal Signals and Radar Establishment (1976-1991)
3208	RSRI	Red Sands Research Institute
3209	RSS	Really Simple Syndication
3210	RTA	Road traffic accident (British)
3211	RTBF	Radio-Télévision belge de la Communauté française
3212	RTF	Rich Text Format
3213	RTFM	the Fucking/Fine Manual
3214	RTG	Radio-isotope Thermoelectric Generator also used for Rubber Tyred Gantry crane
3215	RTI	Run-Time Infrastructure (Simulation)
3216	RTL	see entry
3217	RTP	Real-time Transport Protocol
3218	RTS	see entry
3219	RTT	Round Trip Timing
3220	RU	Russia (ISO 3166 digram)
3221	Ru	Ruthenium
3222	RUC	Royal Ulster Constabulary
3223	RUS	Russia (ISO 3166 trigram)
3224	RUSI	Royal United Services Institute for Defence Studies
3225	RW	Rwanda (ISO 3166 and FIPS 10-4 country code digram)
3226	RWA	Rwanda (ISO 3166 trigram)
3227	RWH	Rain Water Harvesting
3228	RWR	Radar Warning Receiver
3229	RWS	Remote Weapon Station
3230	RX	Receive
3231	SBNO	Standing but not operating (in reference to amusement parks)
3232	SCOTUS	Supreme Court of the United States
3233	SCROTUS	So-called Ruler of the United States
3234	SDHC	Secure Digital High Capacity
3235	SDXC	Secure Digital eXtended Capacity
3236	SG	Senegal (FIPS 10-4 country code), Singapore (ISO 3166 digram), Snow Grains (METAR Code), Study Group
3237	SGOTUS	Second Gentleman of the United States
3238	SHO	Showtime (see also sho.com)
3239	SIRI	Service Interface for Real Time Information
3240	Siri	Speech Interpretation and Recognition Interface (Apple iOS software)
3241	SLOTUS	Second Lady of the United States (the vice president's wife)
3242	SoCon	Southern Conference (U.S. college sports)
3243	STB	Surface Transportation Board[2]
3244	SWAC	Southwestern Athletic Conference
3245	SWAN	System for Wearable Audio Navigation
3246	SWAT	Special Weapons And Tactics
3247	SWF	Single White Female
3248	Ta	Tantalum
3249	TAACOM	U.S. Theater Army Area Command
3250	TAADCOORD	Theatre Army Air Defence Co-ordinator
3251	TAAR	Trace Amine-Associated Receptor
3252	TAC	U.S. Tactical Air Command (1946-1992)
3253	TACAN	Tactical Air Navigation
3254	TACCO	Tactical Coordinator
3255	TACCSF	U.S. Theater Aerospace Command & Control Simulation Facility
3256	TACDAR	Tactical Detection And Reporting
3257	TACSOP	Tactical SOP (Standing Operating Procedure)
3258	TADIL	Tactical Digital Information Link
3259	TAI	Target[ed] Area of Interest
3260	TAJ	Tom and Jerry
3261	TAJT	Tom and Jerry Tales
3262	TALES	Technical Advice and Lexicon for Enabling Simulation
3263	TANJ	There Ain't No Justice (used as expletive in the Ringworld novels)
3264	TANP	Terrain-Aware Network Planner
3265	TANSTAAFL	There Ain't No Such Thing As A Free Lunch (coined by author Robert A. Heinlein in his The Moon Is a Harsh Mistress)
3266	TAPPS	Texas Association of Private and Parochial Schools
3267	TARDIS	Time And Relative Dimension In Space (from Doctor Who)
3268	TAS	Tasmania (postal symbol)
3269	TASER	Thomas A. Swift's Electric Rifle
3270	TASM	Tactical Air-to-Surface Missile
3271	TAT	Tourism Authority of Thailand
3272	TATP	TriAcetone TriPeroxide
3273	TATT	Tired All The Time (medical diagnosis in-joke)
3274	Tb	Terbium
3275	TB	Tuberculosis
3276	TBA	to be announced
3277	TBBPA	TetraBromoBisPhenol-A
3278	TBD	to be done, or: to be documented, or: to be determined, or: to be decided
3279	TBF	to be fair
3280	TBH	To Be Honest
3281	TBL	Turkish Basketball League
3282	TBS	Turner Broadcasting System
3283	TBT	Tributyltin
3284	Tc	Technetium
3285	TCAA	Top Counter-Assault Agents
3286	TCAS	Traffic Collision Avoidance System
3287	TCCCS	Tactical Command,Control and Communication System
3288	TCD	Chad (ISO 3166 trigram)
3289	TCHD	Truck Cargo Heavy Duty
3290	TCL	Tool Command Language
3291	TCM	Turner Classic Movies
3292	TCU	Texas Christian University
3293	TCW	Tasty Coma Wife
3294	TCWMS	Tele-Center Workforce Management System
3295	TDA	The Disney Afternoon
3296	TDL	Tactical Data Link
3297	TDM	Time-Division Multiplexing
3298	TDMA	Time Division Multiple Access
3299	TDP	Technology Demonstration Programme
3300	TDRS	Tracking Data and Relay Satellite
3301	Te	Tellurium
3302	TEAL	Tasman Empire Airways Limited
3303	Team	Together everyone achieves more
3304	TEAMS	The East African Marine System (fiber optic cable)
3305	TED	Technology Entertainment Design prize
3306	TENCAP	Tactical Exploitation of National Capabilities
3307	TERS	Tactical Event Reporting System
3308	TES	Tactical Event System
3309	TEST	Thesaurus of Engineering and Scientific Terms
3310	TEU	Twenty-foot equivalent unit (cargo capacity)
3311	TeVeS	Tensor Vector Scalar theory
3312	TFMPP	Trifluorophenylmethylpiperazine
3313	TFR	Total Fertility Rate
3314	TFT	Thin-Film Transistor
3315	Tg	Teragram
3316	TG	Togo (ISO 3166 digram)
3317	TGO	Togo (ISO 3166 trigram)
3318	Th	Thorium
3319	THA	Thailand (ISO 3166 trigram)
3320	THAAD	Terminal High Altitude Area Defence
3321	THEGENTRY	The High-End Group of Earth's New Technologies Research Yield
3322	THEL	Tactical High Energy Laser ACTD
3323	THG	Tetrahydrogestrinone
3324	TIA	Total Information Awareness initiative
3325	TIA	Transient Ischemic Attack
3326	TIALD	Thermal Imaging and Airborne Laser Designation
3327	TIBS	Tactical Information Broadcast System
3328	TIC	Troops In Contact
3329	TIGERS	Topologically Integrated Geographic Encoding and Referencing System
3330	TINC	There Is No Cabal
3331	TIP	Thermal Identification Panel
3332	tits	Toes in the Sand
3333	TJD	Truncated Julian Day
3334	TJK	Tajikistan (ISO 3166 trigram)
3335	TKL	Tokelau (ISO 3166 trigram)
3336	TKM	Turkmenistan (ISO 3166 trigram)
3337	Tl	Thallium
3338	TLA	Three-Letter Abbreviation/Acronym
3339	TLAM	Tomahawk Land Attack Missile
3340	TLATOJL	The Life and Times of Juniper Lee
3341	TLPM	T1 Line Performance Monitor
3342	Tm	Terametre
3343	TMAP	Texas Medication Algorithm Project
3344	TMC	The Movie Channel
3345	TMD	Theatre Missile Defence
3346	TMDK	The Mighty Don't Kneel (Australian professional wrestling stable also active in Japan)
3347	TMI	Too Much Information
3348	TMJ	TemporoMandibular Joint (syndrome)
3349	TMNT	Teenage Mutant Ninja Turtles
3350	TMPG	Transparent Multi-Platform Gateway
3351	TMR	Twin Main Rotors (helicopter type)
3352	TMS	Transcranial Magnetic Stimulation
3353	TMT	Thirty Meter Telescope
3354	TMTOWTDI	There's Than One Way To Do It (from Perl)
3355	TNA	Total Nonstop Action Wrestling
3356	TNO	Trans-Neptunian Object
3357	TOBS	Time of OBServation
3358	TOC	Table Of Contents, Tactical Operations Centre, Temporo-Occipital transition Cortex, Top of Concrete
3359	TOG	Togo (IOC and FIFA trigram,but not ISO 3166)
3360	TOGS	Thermal Observation Gunnery Sight
3361	TOMS	Total Ozone Mapping Spectrometer (satellite instrument)
3362	TON	Tonga (ISO 3166 trigram)
3363	TOS	Tape Operating System,Terms of service,The Original Series,used to distinguish the first Star Trek TV series from other parts of the media franchise,Tramiel Operating System
3364	TOT	Time On Target
3365	TOW	Tube-launched,Optically tracked,Wire-guided (anti-tank missile)
3366	TP	East Timor (ISO 3166 digram; obsolete 2002),São Tomé and Príncipe (FIPS 10-4 country code),Training Practice,Trident Ploughshares
3367	TPE	Chinese Taipei (IOC and FIFA trigram for the country also known as Taiwan)
3368	TPI	The point is
3369	TPO	Thrombopoietin
3370	TPS	The Pennington School
3371	TPTB	The Powers That Be (often used to refer to the people responsible for the content of TV series or movies)
3372	TQ	Top Qualifier (similar to Pole Position in car racing)
3373	TRA	Technology iness Assessment
3374	TRAC	(U.S. Army) TRADOC Analysis Center
3375	TRACON	Terminal Radar Approach Control
3376	TRADOC	(U.S. Army) Training and Doctrine Command
3377	TRANSCOM	U.S. Transportation Command
3378	TRAP	Tactical Receive equipment and related Applications
3379	TRASANA	TRADOC Systems Analysis Agency
3380	TRD	Towed Radar Decoy
3381	TRIGAT	Third Generation Antitank (missile)
3382	TRL	Technology readiness level
3383	Trp	Troop
3384	TRU	Transuranic
3385	TRUEX	Training in Urban Environment Exercise
3386	TRW	Thompson Ramo Wooldridge Inc.
3387	Ts	Terasecond
3388	TS	Terasiemens,Thunderstorm (METAR code),Tunisia (FIPS 10-4 country code),TinySex,Transsexual, Tough Sh*t
3389	TSA	Theatre Storage Area,Time Slot Allocation,Transportation Security Administration,The Salvation Army
3390	TSEC	Transmission Security Encryption Code
3391	TSL	Transportation Security Laboratory
3392	TSN	The Sporting News (historic name of the periodical now known as Sporting News),The Sports Network
3393	TSO	The Stationery Office (was HMSO until 1996),(U.S.) TRICARE Support Office,Trans-Siberian Orchestra (band)
3394	TSOP	Tactical Standing Operation Procedure,The Sound of Philadelphia (classic 1970s R&B instrumental)
3395	TSR	Terminate and Stay Resident
3396	TSSIA	The Subject Says It All
3397	TT	Teratesla,Terrestrial Time,Tourist Trophy (Motorcycle sport),Trinidad and Tobago (ISO 3166 digram)
3398	TTCT	Torrance Tests of Creative Thinking
3399	TTFN	Ta Ta For Now
3400	TTL	Tax,Title,License,Through-the-lens (photography),Time 'till live,Time to live,Transistor-transistor logic
3401	TTO	Trinidad and Tobago (ISO 3166 trigram)
3402	TTP	Tactics,Techniques,and Procedures,Thrombotic thrombocytopenic purpura,Trailer Transfer Point
3403	TTTEAF	Thomas the Tank Engine and Friends
3404	TTY	TeleTYpewriter (Printer)
3405	TTYL	To You Later (Internet slang)
3406	TTZ	Tetrazolium
3407	TU	Technische Universität (German for 'Technical University'),Thammasat University (Thailand),Turkey (FIPS 10-4 country code)
3408	TUC	Trades Union Congress
3409	TUG	TeX Users Group
3410	TUI	Text-based user interface (cf. CLI),among other uses
3411	TUN	Tunisia (ISO 3166 trigram)
3412	TUNS	Technical University of Nova Scotia
3413	TUR	Turkey (ISO 3166 trigram)
3414	TUSK	Tank Urban Survival Kit
3415	TUV	Tuvalu (ISO 3166 trigram)
3416	TV	Television,Teravolt,Transvestite,Tuvalu (ISO 3166 and FIPS 10-4 country code digram)
3417	Tv	Time value,a designation seen on some camera dials for shutter priority mode
3418	TVA	Tennessee Valley Authority
3419	TVG	Television Games (Network),Tick,Very Good,Often used by School Teachers when marking homework etc. (Tick VG)[1][2]
3420	TVR	TreVor (Wilkinson) Racing
3421	TVS	Tornado vortex signature
3422	TW	Republic of China (Taiwan) (ISO 3166 and FIPS 10-4 country code digram),Terawatt
3423	TWAIN	Technology Without An Interesting Name
3424	TWE	Trans World Entertainment
3425	TWI	The Welding Institute
3426	TWIP	Take What Insurance Pays,When a surgeon agrees to accept a lower payment than he ordinarily would for a procedure and not charge the patient the difference
3427	TWN	Republic of China (Taiwan) (ISO 3166 trigram)
3428	TWP	Technical Working Paper
3429	TWS	Thermal Weapon Sight,Track While Scan
3430	TX	Texas (postal symbol),Transmit,Turkmenistan (FIPS 10-4 country code)
3431	TXV	Thermostatic Expansion Valve
3432	TYT	Take Your Time,Internet chat abbreviation
3433	TZ	Tanzania (ISO 3166 and FIPS 10-4 country code digram)
3434	TZA	Tanzania (ISO 3166 trigram)
3435	TZC	Tetrazolium chloride
3436	U	Uranium
3437	UA	Ukraine (ISO 3166 digram) Unit of Action
3438	UAAP	University Athletic Association of the Philippines
3439	UAB	University of Alabama at Birmingham
3440	UAV	Unmanned Aerial Vehicle,Unprotected Anal and Vaginal sex,UB[edit]
3441	UBC	United Baptist Church,University of British Columbia
3442	UBIGEO	Ubicación Geografica (Spanish for Geographical Location)
3443	UBS	Unbundled Bitstream Services,United Bank of Switzerland,United Banque Suisse
3444	UCBSA	United Cricket Board of South Africa
3445	UCF	University of Central Florida
3446	UCLA	University of California at Los Angeles
3447	UCLES	University of Cambridge Local Examinations Syndicate
3448	UCR	University of California at Riverside
3449	UCR	University of Costa Rica
3450	UCS	Union of Concerned Scientists
3451	UCSB	University of California at Santa Barbara
3452	UCSD	University of California at San Diego
3453	UDAS	Uppsala-DLR Asteroid Survey
3454	UDDI	Universal Description,Discovery and Integration
3455	UDTS	Uppsala-DLR Trojan Survey
3456	UE	Unit of Employment
3457	UEFA	Union of European Football Associations
3458	UESAC	Uppsala-ESO Survey of Asteroids and Comets
3459	UFC	Ultimate Fighting Championship
3460	UFO	Unidentified Flying Object, or: United Farmers of Ontario
3461	UG	Uganda (ISO 3166 and FIPS 10-4 country code digram)
3462	UGA	Uganda (ISO 3166 trigram)
3463	UGV	Unmanned Ground Vehicle
3464	UHF	Ultra High Frequency
3465	UHMW	Ultra-High Molecular Weight
3466	UHRB	Ultra-High Resolution Building (simulation)
3467	UIC	University of Illinois at Chicago
3468	UID	User ID
3469	UIUC	University of Illinois at Urbana-Champaign
3470	UJTL	Universal Joint Task List
3471	UKIP	United Kingdom Independence Party
3472	UKR	Ukraine (ISO 3166 trigram)
3473	UL	Underwriters Laboratories
3474	ULF	Ultra Low Frequency
3475	UM	U.S. Minor Outlying Islands (postal symbol; ISO 3166 digram)
3476	UMCP	Unit Maintenance Collection Point
3477	UMES	University of Maryland Eastern Shore
3478	UMI	U.S. Minor Outlying Islands (ISO 3166 trigram)
3479	UMIST	University of Manchester Institute of Science and Technology
3480	UMTS	Universal Mobile Telecommunications System
3481	UN	United Nations
3482	UNABOM	University and airline bomber (FBI case name)
3483	UNAIDS	(i/a) Joint United Nations Programme on HIV/AIDS
3484	UNAMSIL	United Nations Mission in Sierra Leone
3485	UNCF	United Negro College Fund
3486	UNCLOS	United Nations Convention on the Law of the Sea
3487	UNCSGN	United Nations Conference on the Standardization of Geographical Names
3488	UNCTAD	United Nations Conference on Trade and Development
3489	UNDCP	United Nations Drug Control Programme
3490	UNDE	(i/a) Union of National Defence Employees (Canada)
3491	UNDP	United Nations Development Programme
3492	UNEP	United Nations Environment Programme
3493	UNFCCC	United Nations Framework Convention on Climate Change
3494	UNFICYP	United Nations Peacekeeping Force in Cyprus
3495	UNGEGN	United Nations Group of Experts on Geographical Names
3496	UNHCR	United Nations High Commission (er) for Refugees
3497	UNICEF	United Nations Children's Fund (originally the United Nations International Children's Emergency Fund)
3498	UNICRI	United Nations Interregional Crime and Justice Research Institute
3499	UNIDO	United Nations Industrial Development Organization
3500	UNIFEM	United Nations Development Fund for Women (from the French Fonds de développement des Nations unies pour la femme)
3501	UNMIK	United Nations Interim Administration Mission in Kosovo
3502	UNOSOM	United Nations Operations in Somalia
3503	UNPROFOR	United Nations Protection Force (in former Yugoslavia)
3504	UNRISD	United Nations Research Institute for Social Development
3505	UNSM	Union of Nova Scotian Municipalities
3506	UNTAC	United Nations Transitional Authority in Cambodia
3507	UNTAET	(i/a) United Nations Transitional Administration in East Timor
3508	UNU	United Nations University
3509	UPdM	Università Popolare della Multimedialità
3510	UPI	United Press International
3511	UPN	United Paramount Network
3512	UPU	Universal Postal Union
3513	URBSFA	Union royale belge des sociétés de football association (French for Royal Belgian Football Association)
3514	URD	User Requirements Document
3515	URY	Uruguay (ISO 3166 trigram)
3516	US	United States (also ISO 3166 and FIPS 10-4 country code digram)
3517	USAF	United States Air Force
3518	USAFSPC	U.S. Air Force Space Command
3519	USAID	United States Agency for International Development
3520	USAPATRIOT	Uniting and Strengthening America by Providing Appropriate Tools Required to Intercept and Obstruct Terrorism
3521	USAREUR	United States Army Europe
3522	USB	Universal Serial Bus
3523	USCG	United States Coast Guard
3524	USDA	United States Department of Agriculture
3525	USDI	United States Department of the Interior
3526	USDOE	United States Department of Energy
3527	USDRE	(U.S.) Under-Secretary of Defense for Research and Engineering (1978-1986)
3528	USEC	United States Enrichment Corporation
3529	USFL	United States Football League
3530	USFWS	United States Fish and Wildlife Service
3531	USGS	United States Geological Survey
3532	USIA	United States Information Agency
3533	USJFCOM	United States Joint Forces Command
3534	USMC	United States Marine Corps
3535	USMNT	United States men's national (soccer) team
3536	USN	United States Navy
3537	USNB	United States Naval Base
3538	USNG	United States National Grid
3539	USNH	United States Naval Hospital
3540	USNI	United States Naval Institute
3541	USNO	U.S. Naval Observatory
3542	USNOFS	United States Naval Observatory Flagstaff Station
3543	USNP	United States Newspaper Program
3544	USNR	United States Navy Reserve
3545	USNS	United States Naval Ship
3546	USNZ	University Sport New Zealand
3547	USPS	United States Postal Service
3548	USPTO	United States Patent and Trademark Office
3549	USS	United States ship (sometimes meaningless; see Star Trek)
3550	USSPACECOM	United States Space Command
3551	USSR	Union of Soviet Socialist Republics
3552	UST	Underground Storage Tank
3553	USTRANSCOM	United States Transportation Command
3554	USWNT	United States women's national (soccer) team
3555	UT	Universal Time
3556	UTEP	University of Texas at El Paso (pronounced you-tep)
3557	UTM	Universal Transverse Mercator (geographical co-ordinate system)
3558	UUA	Unitarian Universalist Association
3559	UUID	Universally Unique Identifier (see also GUID)
3560	UUV	Unmanned Underwater Vehicle
3561	UW	University of Washington
3562	UWO	University of Western Ontario
3563	UWT	Under Water Telephone
3564	UWTG	Under Water Tug
3565	UWW	United World Wrestling
3566	UXO	Unexploded Ordnance
3567	UY	Uruguay (ISO 3166 and FIPS 10-4 country code digram)
3568	UZ	Uzbekistan (ISO 3166 and FIPS 10-4 country code digram)
3569	UZB	Uzbekistan (ISO 3166 trigram)
3570	VACIS	Vehicle And Container Inspection System
3571	VACIS	Victorian Ambulance Clinical Information System
3572	VANOS	Variable Nockenwelle System
3573	VAO	Vienna Art Orchestra
3574	VBA	Visual Basic for Applications
3575	vCJD	Variant Creutzfeldt-Jakob Disease
3576	VCNO	(U.S.) Vice Chief of Naval Operations
3577	VCofS	Vice Chief of Staff
3578	VCR	Video cassette recorder
3579	VCT	Saint Vincent and the Grenadines (ISO 3166 trigram)
3580	VDFS	VisualSVN Distributed File System (VDFS)
3581	VE	Venezuela (FIPS 10-4 country code; ISO 3166 digram)
3582	VEEGA	Venus Earth Earth Gravity Assist manœuvre
3583	VEN	Venezuela (ISO 3166 trigram)
3584	VERITAS	Very Energetic Radiation Imaging Telescope Array System
3585	VfD	s for deletion (used in Wikipedia)
3586	VFM	Value For Money
3587	VFMO	Very Fast Moving Object (astronomy)
3588	VFT	Virtual Function Table
3589	VFW	Veterans of Foreign Wars
3590	VG	British Virgin Islands (ISO 3166 digram)
3591	VGB	British Virgin Islands (ISO 3166 trigram)
3592	VH1	Video Hits One
3593	VHF	Very High Frequency
3594	VIA	Versatile Interface Adapter
3595	VIDS	Visual Information Display System
3596	VII	7 (in Roman numerals)
3597	VIII	8 (in Roman numerals)
3598	VIN	(i/a) Vehicle Identification Number (ISO 3779)
3599	VIP	Very Important Person
3600	VISCII	VIetnamese Standard Code for Information Interchange
3601	VIT	Vellore Institute of Technology
3602	VIVO	Video In Video Out
3603	VJ	Video Jockey
3604	VLAD	Vertical Line Array DIFAR
3605	VLBA	Very Long Baseline Array
3606	VLF	Very Low Frequency
3607	VLIW	Very Long Instruction Word
3608	VLPFC	VentroLateral PreFrontal Cortex
3609	VLPMC	VentroLateral PreMotor Cortex
3610	VLSI	Very-large-scale integration
3611	VM	Vietnam (FIPS 10-4 country code)
3612	VMF	Marine Fighting Squadron of the United States Marine Corps
3613	VMF	Variable Message Format
3614	VMN	VentroMedial Nucleus (neurophysiology)
3615	VN	Vietnam (ISO 3166 digram)
3616	VNIR	Visible and Near InfraRed
3617	VNM	Vietnam (ISO 3166 trigram)
3618	VNS	see entry
3619	VOA	Voice of America
3620	VOIP	Voice Over Internet Protocol
3621	VOLT	Visual OpenType Layout Tool
3622	VON	Victorian Order of Nurses
3623	VOR	Voice of Russia
3624	VOX	Voice Operated oscillator
3625	VPOTUS	Vice President of the United States
3626	VPN	Virtual Private Network
3627	VR	Virtual Reality
3628	VRSG	Virtual Reality Scene Generator
3629	VSHORAD	Very Short Range Air Defence
3630	VSO	Voluntary Services Overseas
3631	VSR	Very Special Relativity
3632	VTC	Video Tele-Conference
3633	VTEC	Variable valve Timing and Electronic lift Control
3634	VTOL	Vertical Take-Off & Landing
3635	VUB	Vrije Universiteit Brussel (Belgian university)
3636	VUT	Vanuatu (ISO 3166 trigram)
3637	VVAF	Vietnam Veterans of America Foundation
3638	VW	Volkswagen
3639	VZ	Verizon Communications (NYSE code)
3640	W3C	World Wide Web Consortium
3641	WAAC	Women's Army Auxiliary Corps (Britain) (World War I UK)
3642	WAAF	Women's Auxiliary Air Force (World War II UK)
3643	WACC	Weighted Average Cost of Capital (accounting)
3644	WACS	What-A-Cartoon! Show
3645	WAD	Weapons Alert Designator
3646	WAGGGS	World Association of Girl Guides and Girl Scouts
3647	WAL	see entry
3648	WAN	Wide area network
3649	WAP	Wireless Application Protocol
3650	WAPIMA	What a pain in my ass
3651	WAR	With All Respect
3652	WAsP	Short form of WAAAAP (Wind Atlas Analysis and Application Program)
3653	WAYP	White And Yellow Pages
3654	Wb	Weber
3655	WBC	World Boxing Council
3656	WBE	Work Breakdown Element
3657	WBO	World Boxing Organization
3658	WCBO	World Chess Boxing Organisation
3659	WCBP	World Center for Birds of Prey
3660	WCL	World Confederation of Labour
3661	WCW	World Championship Wrestling
3662	WDIN	Wildlife Disease Information Node
3663	WDWR	Walt Disney World Resort
3664	WEBS	Weapon Effectiveness Battle Simulation
3665	WEC	World Extreme Cagefighting
3666	WEEE	Waste Electrical and Electronic Equipment
3667	WEF	World Economic Forum
3668	WEM	West Edmonton Mall
3669	WEU	Western European Union
3670	WEZ	Weapon Engagement Zone
3671	WF	Wallis and Futuna Islands (ISO 3166 digram)
3672	WFC	Women's Forage Corps (World War II UK)
3673	WFD	Weapon of Focused Destruction
3674	WFF	Wallops Flight Facility
3675	WFI	Water for Injection
3676	WFH	Working from home
3677	WFP	World Food Program
3678	WFZ	Weapons Free Zone
3679	WH	Wehrmacht Heer (German World War II army vehicle licence plate code)
3680	WHAM	Wisconsin Hydrogen-Alpha Mapping (telescope)
3681	WHI	Women's Health Initiative
3682	WHIP	Walks plus hits per inning pitched
3683	WHO	World Health Organisation
3684	WHS	(U.S.) Washington Headquarters Services
3685	WIIFM	What's in it for me?
3686	WIP	Work In Progress
3687	WIPO	World Intellectual Property Organization
3688	WIPP	[Nuclear] Waste Isolation Pilot Plant
3689	WIYN	Wisconsin Indiana Yale NOAO telescope consortium
3690	WKYP	Will Keep You Posted
3691	WL	Wehrmacht Luftwaffe (German World War II air force vehicle licence plate code)
3692	WLB	Women's Land Brigade (World War II Canada)
3693	WLF	Wallis and Futuna Islands (ISO 3166 trigram)
3694	WLOG	Without Loss Of Generality (see WOLOG)
3695	WM	Wehrmacht Marine (German World War II navy vehicle licence plate code)
3696	WMANUS	West Midlands Area National Union of Students
3697	WMD	World Movement for Democracy
3698	WMI	Wildlife Management Institute
3699	WMO	World Meteorological Organization
3700	WNA	World Nuclear Association
3701	WNF	Will Not Fix
3702	WNIT	Women's National Invitation Tournament
3703	WNW	West North-West
3704	WO	Warrant Officer
3705	WOF	Width of Fabric
3706	WOFT	Waste Of Fucking Time
3707	WOFTAM	Waste Of Fucking Time And Money
3708	WOI	Wheels Of Italy
3709	WOM	Write Only Memory
3710	WOS	Wilson Ornithological Society
3711	WOT	Waste Of Time
3712	WP	White Phosphorus (ammunition)
3713	WPB	War Production Board during World War II
3714	WPE	World Pork Expo
3715	WPK	Wider Peacekeeping
3716	WR	Wide Receiver (football)
3717	WRAC	Women's Royal Army Corps (World War II UK)
3718	WRAIR	Walter Reed Army Institute of Research
3719	WRBWWRM	We Best What We Most
3720	WRC	World Rally Championship
3721	WRC	World Religions Conference
3722	WRNG	Warning
3723	WRS	Worldwide Reference System
3724	WRT	NHS Workforce Review Team
3725	WRT	The Linksys routers whose model name start with 'WRT'
3726	WRT	Third party firmware for the Linksys WRT routers and compatible models from other vendors.
3727	WRT	Web Runtime (WRT) is a portable application framework developed by Nokia that allows the creation of widgets on the S60 Platform.
3728	WRT	Wireless Receiver/Transmitter ( computer networks/IT )
3729	WRT	Wireless Ronin Technologies (digital signage)
3730	WRT	World Rally Team
3731	WRT	Writer Response Theory
3732	WSC	Weapon System Catalogue
3733	WSDL	Web Services Description Language
3734	WSJ	(The) Wall Street Journal
3735	WSROC	Western Sydney Regional Organisation of Councils
3736	WSSM	Winchester Super Short Magnum (family of rifle cartridges)
3737	WSTC	Women Signallers Territorial Corps (World War II UK)
3738	WSW	West South-West
3739	WTC	World Trade Center
3740	WTF	What the fuck?; also What a Terrible Failure (android)
3741	WTFH	What The Fucking Hell
3742	WTH	What the Hell
3743	WTO	World Trade Organization
3744	WUBU2	What you been up to
3745	WV	West Virginia (postal symbol)
3746	WVA	World Veterinary Association
3747	WVIAC	West Virginia Intercollegiate Athletic Conference
3748	WVR	Women's Volunteer Reserve (World War II UK)
3749	WVSC	Women's Volunteer Service Corps (World War II Canada)
3750	WVU	West Virginia University
3751	WW	see entry
3752	WWE	World Wrestling Entertainment
3753	WWI	World War I
3754	WWII	World War II
3755	WWIII	World War III
3756	WWJD	What would Jesus do?
3757	WWS	Wheaton Warrenville South High School
3758	WWWF	World Wide Wrestling Federation
3759	WXO	Weather [Executive] Officer
3760	WY	Wyoming (postal symbol)
3761	WZ	Swaziland (FIPS 10-4 country code)
3762	XBML	eXtended Business Modelling Language
3763	XC	Ninety (in Roman numerals)
3764	XCBL	XML Common Business Library
3765	XD	Used in chatrooms or email for smiley face. X is the eyes; squinted D is the mouth; XD.
3766	Xe	Xenon
3767	XFA	XML Forms Architecture
3768	XFC	Xtreme Fighting Championships
3769	XFD	Fighter aircraft made by Douglas
3770	Xfe	X File Explorer
3771	XFF	X-Forwarded-For
3772	XFG	Exfoliation glaucoma
3773	XFR	Automobile made by Jaguar
3774	XFT	X FreeType interface library
3775	XG	Automobile made by Hyundai
3776	XGA	Extended Graphics Array
3777	XGP	Extreme Game Player
3778	XHTML	eXtensible Hypertext Markup Language
3779	XI	Eleven (in Roman numerals)
3780	XII	Twelve (in Roman numerals)
3781	XIII	Thirteen (in Roman numerals)
3782	XIV	Fourteen (in Roman numerals)
3783	XIX	Nineteen (in Roman numerals)
3784	XJS	Automobile made by Jaguar
3785	XKB	X keyboard extension
3786	XKE	Automobile made by Jaguar
3787	XKR	Automobile made by Jaguar
3788	XML	eXtensible Markup Language
3789	XMSF	eXtensible Modelling and Simulation Framework
3790	XNA	X-No-Archive,Xeno Nucleic Acid
3791	XNC	X Northern Captain
3792	XNU	X is Not Unix
3793	XP	eXperience Point (role-playing games)
3794	XQJ	XQuery API for Java™
3795	XRAY	X-Ray
3796	XRML	eXtensible Rights Markup Language
3797	XS	Xiaolin Showdown
3798	XSL	eXtensible Style Language
3799	XTMH	eXtreme Technology Multiprocessor Hyperlanguage
3800	XUL	XML User Interface Language
3801	XV	Fifteen (in Roman numerals)
3802	XVI	Sixteen (in Roman numerals)
3803	XVII	Seventeen (in Roman numerals)
3804	XVIII	Eighteen (in Roman numerals)
3805	XWF	Xcitement Wrestling Federation
3806	XX	Twenty (in Roman numerals)
3807	Xyl	Xylobium
3808	XZN	Triple square screw driver
3809	y	Yocto-
3810	Y2K	Year Two Thousand
3811	yA	Yoctoampere
3812	Ya	Yottayear
3813	YaBPr	Yet another Brother Pat rant
3814	YABSLAG	Yet another boy singing like a girl
3815	YAC	Youth-Adult Committee
3816	YAFLA	Yet Another Five Letter Abbreviation
3817	YAP	Young Aspiring Professional
3818	YB	Youcef Benzouada (Southern Algerian name)
3819	Yb	Ytterbium
3820	yC	Yoctocoulomb
3821	YC	Yottacoulomb
3822	YDS	Yosemite Decimal System (climbing)
3823	YE	Yemen (ISO 3166 digram)
3824	YEM	Yemen (ISO 3166 trigram)
3825	yF	Yoctofarad
3826	YF	Yottafarad
3827	yg	Yoctogram
3828	Yg	Yottagram
3829	YGCO	Yamaneko Group of Comet Observers
3830	Ygo	Yu-Gi-Oh!
3831	yH	Yoctohenry
3832	YH	Yottahenry
3833	YHBT	You Have Been Trolled
3834	YHII	You Have It Inside
3835	YHS	Ya Hoor sur!
3836	Yi	Yobi
3837	Yippie	Youth International Party + suffix
3838	yJ	Yoctojoule
3839	YJ	Yottajoule
3840	yK	Yoctokelvin
3841	YK	Yottakelvin
3842	YKYFCW	You know you're from Christchurch when (post-earthquake joke)
3843	yL	Yoctolitre
3844	YL	Yottalitre
3845	ym	Yoctometre
3846	Ym	Yottametre
3847	YMMD	You Make My Day
3848	yN	Yoctonewton
3849	YN	Yottanewton
3850	YOLO	You Only Live Once
3851	YPA	Yards per Pass Attempt (football statistic)
3852	YPIO	Your Problem Is Obvious
3853	YPO	Young Presidents' Organization
3854	ys	Yoctosecond
3855	yS	Yoctosiemens
3856	Ys	Yottasecond
3857	YS	Yottasiemens
3858	YSI	Young Scots for Independence
3859	yT	Yoctotesla
3860	YTD	Year-To-Date
3861	YTM	Yield to Maturity
3862	YTS	Youth Training Scheme
3863	YTT	Yoshi Topsy-Turvy
3864	Yuppie	Young Urban Professional + suffix
3865	yV	Yoctovolt
3866	YV	Yottavolt
3867	yW	Yoctowatt
3868	YW	Yottawatt
3869	YYH	YuYu Hakusho
3870	z	Zepto
3871	Z	Zetta
3872	zA	Zeptoampere
3873	ZAF	South Africa (ISO 3166 trigram)
3874	ZAMS	Zero age main sequence
3875	ZAS	Zylinder Abschaltung System
3876	ZBT	Zero-Balance Transfer (accounting)
3877	zC	Zeptocoulomb
3878	ZC	Zettacoulomb
3879	ZCM	(n) ZENworks Configuration Management
3880	ZCMK	Zone Control Master Key
3881	ZCU	Zimbabwe Cricket Union
3882	\a	Atto-