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