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From: scott@wuphys.UUCP (Scott Barthelmy)
Newsgroups: net.misc,net.wanted
Subject: acronym list with definitions/expansions
Message-ID: <245@wuphys.UUCP>
Date: Thu, 28-Mar-85 22:10:50 EST
Article-I.D.: wuphys.245
Posted: Thu Mar 28 22:10:50 1985
Date-Received: Fri, 5-Apr-85 07:44:24 EST
Distribution: net
Organization: Physics Dept., Washington Univ. in St. Louis
Lines: 950
Xref: linus net.misc:6190 net.wanted:5224

[]
Below is a list of 928 acronyms and definitions.  I post this in the
hopes that others may find some use for it and in the hopes that I can
elicit other acronyms from other people.  I need this list to test out some
software for acronym processing.  If you have some existing file of such
would you please mail to me.  I'll even take single acronym replies as I
expect I may get more that way then from existing large lists.
I will collate all replies, merge them into the list below and repost it.
It would be most useful if the acronyms sent are of a general nature.
By that I mean would be recognized by someone outside of you particular
group/division/project.  If they are likely to appear in print in something
more general than an in-house memorandum or tech report then they will be
suitable for this compilation.

Thanks.	Scott Barthelmy		"I am a child of the unixverse."

	ihnp4!wuphys!scott

	Washington U, Physics Dept.
	St. Louis, Mo
----------------------------------------------------------------------------
AA	- Alcoholics Anonymous
AAA	- American Automobile Association
AAAS	- American Association for the Advancement of Science  -  A.A.A.S
AAMSI	- American Association for Medical Systems Informatics
ABA	- American Bar Association
ABC	- American Broadcasting Company
AC	- Alternating Current (ac, see also DC)
AC	- Ante Christum (before Christ)
AC	- Ante Cibum (before meals)
ACTS	- Advanced Communications Technology Satellite
AD	- After Date
A/D	- Analog to Digital converter (see ADC)
AD	- Anno Domini (in the year of our Lord)
ADC	- Analog to Digital Converter
ADM	- ADMiral
AEC	- Atomic Energy Commission
AEF	- American Expiditionary Force (see BEF)
AF	- Air Force
AF	- Audio Frequency
AFB	- Air Force Base
AFC	- Automatic Frequency Control
AFLCIO	- American Federation of Labor and Congress of Industrial Organizations
AG	- Adjutant General
AG	- Attorney General
AI	- Artificial Intelligence
ALA	- Automobile Legal Association
ALC	- Automatic Load Control
ALU	- Arithmetic Logic Unit
AM	- Amplitude Modulation
AM	- Ante Meridiem (before noon)
AMA	- American Medical Association
AMD	- Advanced Micro Devices
AMSAT	- radio AMateur SATellite corp.
AMVET	- AMerican VETeran
ANSI	- American National Standards Institute
ANSI	- American National Standards Institute
AO	- Account Of
AP	- Additional Premium
AP	- Associated Press
APB	- All Points Bulletin
ApJ	- Astrophysical Journal   -    Ap J
APO	- Army Post Office
ARC	- American Red Cross
ARCNET	- Attached Resource Computer local area NETwork
ARRL	- Amateur Radio Relay League
ARV	- American Revised Version
ASAP	- As Soon As Possible
ASHRAE	- Amer. Soc. of Heating, Refrigerating and Air-cond. Engineers, inc.
ASIC	- Application Specific Integrated Circuit
ASSP	- Autonomous Soviet Socialist Republic
ASV	- American Standard Version
ATP	- Adenosine TriPhosphate
AUS	- Army of the United States
AWACS	- Airborne WArnings and Control Systems
AWK	- al Aho, peter Weinberger, brian Kernighan (pattern scanning language)
AWOL	- Absent WithOut Leave
BA	- Bachelor of Arts
BB	- Bases on Balls
BB	- Best of Breed
BBA	- Bachelor of Business Administration
BBB	- Better Business Bureau
BBC	- British Broadcasting Corporation
BC	- Before Christ
BC	- British Columbia
BCS	- Bachelor of Commercial Science
BD	- Bachelor of Divinity
BD	- Bank Draft
BD	- Bills Discounted
BE	- Bill of Exchange
BEF	- British Expiditionay Force (see AEF)
BER	- Bit Error Rate
BF	- Brought Forward
BFA	- Bachelor of Fine Arts
BID	- Bis In Die (twice a day)
BIOS	- Basic Input Output System
BLT	- Beacon, Lettuse and Tomatoe
BM	- Basal Metabolism
BM	- Bowl Movement
BMEWS	- Ballistic Missile Early Warning
BMO	- Ballistic Missle Office
BMR	- Basal Metabolism Rate
BO	- Body Oder
BO	- Branch Office
BO	- Buyer's Option
BOQ	- Bachelor Oficers' Quarters
BP	- Blood Pressure
BP	- British Pharmacopoeia
BPOE	- Benevolent and Protective Order of Elks
BR	- Bills Receivable
BS	- Bachelor of Science
BS	- Bill of Sale
BSA	- Boy Scouts of America
BSc	- Bachelor of SCience
BSD	- Berkeley Software Distribution
BTL	- Bell Telephone Laboratory
BTU	- British Thermal Unit
BTW	- By The Way
BV	- Blessed Virgin
BWI	- British West Indies
BX	- Base eXchange
CA	- Chartered Accountant
CA	- Chief Accountant
CA	- Chronological Age
CAB	- Civil Aeronautics Board
CAD	- Computer Aided Design (sometimes seen as CAD/CAM)
CAE	- Computer Aided Engineering
CAM	- Computer Aided Manufacturing (sometimes seen as CAD/CAM)
CAP	- Civil Air Patrol
CATV	- Community Antena TeleVision
CBC	- Canadian Broadcasting Corporation
CBD	- Cash Before Delivery
CBS	- Columbia Broadcasting System
CBW	- Chemical and Biological Warfare
CC	- Corbon Copy
CCC	- Civil Conservation Corps
CCC	- Command, Control, and Communications
CCCCM	- CCC CounterMeasures (sometimes C^3CM)
CCCI	- Command, Control, Communications, and Intelligence
CCD	- Charge Coupled Device
CCI	- Computer Consoles, Incorporated
CCTV	- Close Circuit TeleVision
CD	- Civil Defense
CD	- Compact Disk
CD	- Certificate of Deposit
CDR	- CommanDeR
CDT	- Central Daylight Time
CE	- Chemical Engineer
CE	- Civil Engineer
CE	- Corps of Engineers
CENS	- Centre d'Etudes Nucleaires de Seclay
CF	- Carry Forward
CFD	- Computational Fluid Dynamics
CFI	- Cost, Freight, and Insurance
CG	- Coast Guard
CG	- Commanding General
CH	- ClearingHouse
CH	- CourtHouse
CH	- CustomHouse
CID	- Central Institute for the Deaf
CID	- Charge Injection Device
CID	- Computer Integrated Design
CIM	- Computer Integrated Manufacturing
CIT	- California Institute of Technology
CIT	- Case Institute of Technology (part of CWRU, Cleveland, OH)
CLU	- Chartered Life Underwriter
CM	- Congregation of the Mission
CMOS	- Complementary Metal Oxide Semiconductor
CMRR	- Common Mode Rejection Ratio
CMSgt	- Chief Master Sergeant
CNO	- Chief of Navel Operations
CNR	- Carrier to Noise Ratio
CNS	- Central Nervous System
CO	- Cash Order
CO	- Commanding Officer
CO	- Conscientious Objector
COBOL	- COmmon Business Oriented Language
COD	- Collect On Delivery; Cash On Delivery
CP	- Chemically Pure
CP	- Command Post
CPA	- Certified Public Accountant
CPFF	- Cost Plus Fixed Fee
CPM	- Control Program Monitor (sometimes CP/M)
CPO	- Chief Petty Officer
CPT	- CaPTain
CPU	- Central Processor Unit
CPW	- Certified Public Weigher
CQ	- Change of Quarters
CRC	- Cyclical Redundancy Character
CRT	- Cathode Ray Tube (also generic refernce to a terminal)
CS	- Civil Servant
CS	- County Seat
CSA	- Confederate States of America
CSM	- Command Sergeant Major
CST	- Central Standard Time
CT	- Central Time
CTIO	- Cerro Tololo Inter-american Observatory
CW	- Continuous Wave
CWO	- Cash With Order
CWO	- Chief Warrent Officer
CWRU	- Case Western Reserve University
CYO	- Catholic Youth Organization
CZ	- Canal Zone
DA	- Days after Acceptance
DA	- Department of Agriculture
DA	- Deposit Account
DA	- District Attorny
DA	- Don't Answer
DARPA	- Defence Advanced Research Projects Agency
DB	- DataBase
dbms	- DataBase Management System (rdbms for Relational ...)
DC	- Direct Current (dc, see also AC)
DD	- Days after Date
DD	- Demand Draft
DD	- Dishonourable Discharge
DD	- DOctor of Dental Surgery
DD	- Doctor of Divinity
DDC	- Digital Data Converter
DDS	- Doctor of Dental Science
DEC	- Digital Equipment Corporation
DEW	- Distant Early Warning (as in DEW Line)
DF	- Damage Free
DFC	- Distinguished Flying Cross
DFM	- Distinguished Flying Medal
DG	- Dei Gratia (by the grace of God)
DG	- Director General
DHSS	- british Department of Health and Social Security
DIY	- Do It Yourself
DJ	- Disc Jockey
DLA	- Defense Logistics Agensy
DLO	- Dead Letter Office
DMA	- Direct Memory Access
DMD	- Doctor of Dental Medicine
DME	- Distance Measuring Equipment
DMZ	- DeMilitarized Zone
DNA	- DeoxyriboNucleic Acid
DNA	- Digital Network Architecture
DOA	- Dead On Arrival
DOB	- Date Of Birth
DOD	- Department Of Defense
DOS	- Disk Operating System
DOT	- Department Of Transportation
DP	- Data Processing
DP	- Displaced Persons (expelled from native land)
DP	- Double Play
DR	- Dead Reckoning
DR	- Dinning Room
DRAM	- Dynamic Random Access Memory (as opposed to static RAM)
DRI	- Digital Research, Incorporated
DSM	- Distinguished Service Medal
DSO	- Distinguished Service Order
DSP	- Digital Signal Processing
DSP	- Decessit Sine Prole (died without issue)
DST	- Daylight Savings Time
DT	- Delirium Tremens
DTR	- Data Terminal Ready
DUT	- Device Under Test
DV	- DeoVo lente (God willing)
DVM	- Digital Volt Meter
DVM	- Doctor of Veterinary Medicine
DWI	- Driving While Intoxicated
DX	- Distance (as in long distance rado communication)
E	- East
ECC	- Error Correction Code (corrects error in memory or transmission)
ECG	- ElectroCardioGram
ECL	- Emitter Coupled Logic (see also TTL)
ECM	- Electronic Counter Measure
ECM	- European Common Market
EDP	- Electronic Dta Processing
EDT	- Eastern Daylight Time
EE	- Electrical Engineer
EE	- Electrical or Electronics Engineer
EEG	- ElectroEncephaloGram
EEPROM	- Electrically erasable Programmable Read Only Memory
EHF	- Extremely High Frequency (30-300GHz)
EKG	- ElectroKardioGramm (see ECG)
ELF	- Extemely Low Frequency
ELP	- Emerson, Lake and Palmer (the rock band)
EM	- Enlisted Man (see EW)
EMF	- ElectroMotive Force
EMT	- Emergancy Medical Technician
ENS	- ENSign
EPA	- Environmental Protection Agency
EPROM	- Erasable Programmable Read Only Memory
ESA	- European Space Agency
ESE	- East South East
ESO	- European Southern Observatory
ESP	- Extra Sensory Perception
EST	- Eastern Standard Time
ET	- Eastern Time
ET	- ExtraTerrestial
ETA	- Estimated Time of Arrival
ETD	- Estimated Time of Departure
ETV	- Education TeleVision
EVA	- ExtraVehicular Activity
EW	- Enlisted Woman (see EM)
EW	- Electronic Warfare
FAA	- Federal Aviation Agency
FAO	- Food and Agriculture Organization of the united states
FAS	- Free Alongside Ship
FAX	- FAcimile
FB	- Freight Bill
FBI	- Federal Bureau of Investigation
FCC	- Federal Comunication Commission
FDA	- Food and Drug Administration
FDIC	- Federal Deposit Insurance Corporation
FEPC	- Fair Employment Practices Commission
FET	- Field Effect Transistor
FFT	- Fast Fourier Transform
FHA	- Federal Home Administration
FICA	- Federal Insurance Contributions Act
FIFO	- First In First Out (as in registers and buffers)
FILO	- First In Last Out (see also FIFO)
FIO	- Frequency In and Out
FM	- Frequency Modulation
FO	- Foreign Office
FO	- Forward Observer
FOB	- Free On Board
FOC	- Free Of Charge
FOR	- Free On Rail
FORTRAN	- FORmula TRANslation
FOT	- Free On Truck
FOV	- Field Of View
FPC	- Fish Protein Concentrate
FPLA	- Field Programmable Logic Array (see PLA)
FPM	- Feet Per Minute
FPO	- Fleet Post Office
FPS	- Feet Per Second
FRS	- Federal Reserve System
FSLIC	- Federal Savings and Loan Insurance Corporation
FTC	- Federal Trade Commission
FWD	- Front Wheel Drive
FWHM	- Full Width at Half Maximum
FYI	- For Your Information
GA	- General Assembly
GA	- General Average
GA	- General of the Army
GAR	- Grand Army of the Republic
GATT	- General Agreement on Tariffs and Trade
GAW	- Guarenteed Annual Wage
GB	- Great Britain
GBIP	- General Purpose Interface Bus
GC	- Gas Chromatograph (or Chromatography
GCA	- Ground Controlled Approach
GCT	- Greenich Civil Time
GHQ	- General HeadQuaters
GHz	- Giga HertZ (unit of frequency, 1,000,000,000 cycles per second)
GI	- Galvanized Iron
GI	- Geneeral Issue
GI	- Government Issue
GISS	- Goddard Institute for Space Studies
GKS	- Graphics Kernal System
GM	- General Manager
GM	- Guided Missil
GMT	- Greenich Mean Time
GNP	- Gross National Product
GP	- General Practissioner
GPO	- General Post Office
GPO	- Government Printing Office
GPS	- Global Positioning System
GQ	- General Quarters
GRB	- Gamma Ray Burst(er)
GRO	- Gamma Ray Observatory
GSA	- General Services Adminstration
GSFC	- Goddard Space Flight Center
GT	- Gross Ton
GWEN	- Ground Wave Emergency Network
Hb	- HemogloBin
HBM	- Her British Majesty; His British Majesty
HC	- Holy Communion
HC	- House of Commons
HCL	- High Cost of Living
HD	- Heavy Duty
HDA	- Head Disk Assembly (in winchester disk drives)
HDTV	- High Definition Television
HE	- His Eminence; His Excelancy
HEAO	- High Energy Astronomical Observatory
HF	- High Frequency (3-30MHz)
HP	- Hewlett Packard, inc.
HP	- High Pressure
HP	- HorsePower
HPGe	- High Purity Germanium
HQ	- HeadQuarters
HR	- House of Representatives
HRH	- Her Royal Highness
HRH	- His Royal Highness
HS	- High School
HST	- Hawaiian Standard Time
HT	- High Tension (as in electric power transmission)
HUD	- Housing and Urban Development
HUD	- Heads Up Display
Hz	- HertZ (unit of frequency, cycles per second)
IBM	- International Business Machines, inc.
IC	- Integrated Circuit
ICBM	- Intercontinental Ballistic Missile
ICJ	- International Court of Justice
ICRC	- Internaltional Cosmic Ray Conference
IE	- Indo-European
IEEE	- Institute of Electrical and Electronics Engineers
IF	- Intermediate Frequency (as in IF stage)
IGY	- International Geophysical Year
IHP	- Indicated HorsePower
ILS	- Instrument Landing System
IMF	- International Monetary Fund
INRA	- Iesus Nazerenus Rex Iudaeorum (Jesus of Nazareth, King of the Jews)
IO	- Input Ouput (sometimes I/O)
IOOF	- International Order of Odd Fellows
IP	- Innings Pitched
IQ	- Intelligence Quotient
IRA	- Irish Republican Army
IRAS	- Infrared Astronomical Satellite
IRBM	- Intermediate Range Ballistic Missil
IRE	- (old name for the now IEEE, which see)
IRS	- Internal Revenue Service
ISEE	- International Sun Earth Explorer (usually ISEE-3)
ISO	- International Standards Organization
ISPM	- International Solar Polar Mission
ISRG	- Independent Space Research Group
ITU	- International Telecomunications Union
JBS	- John Birch Society
JC	- Junior College
JC	- Joint Compound (plumbing)
JCAC	- Joint Civil Affairs Committee
JCAE	- Joint Committee on Atomic Energy
JDS	- John Dewey Society
JES	- John Ericsson Society
JGR	- Journal of Geophysical Research
JMS	- John Milton Society
JPL	- Jet Propulsion Laboratory
JRC	- Junior Red Cross
JSRC	- Joint Services Review Committee
JTIDS	- Joint Tactical Information Distribution Systems
JV	- Junior Varsity
K9	- canine (K9 corps - army dogs)
KC	- Knights of Columbus
KD	- Kiln Dried
KD	- Knocked Down
KHz	- Kilo HertZ (unit of frequency, 1000 cycles per second)
KI	- Kiwanis International
KO	- Knock Out
KP	- Kitchen Police
KPNO	- Kitt Peak National Observatory
KPO	- KeyPunch Operator
KS	- King's Scholar
LA	- Low Altitude
LADAR	- LAser Detection And Ranging
LAM	- Master of Liberal Arts
LAN	- Local Apparent Noon
LAN	- Local Area Network
LAR	- Local Aquisition Radar
LAT	- Local Apparent Time
LB	- Light Bomber
LBL	- Lawrence Berkeley Labs
LC	- inductor-Capacitor circuit (as in filters, L is symbol inductance)
LCD	- Lowest Common Denominator
LDEF	- Long Duration Exposure Facility
LED	- Light Emitting Diode
LEM	- Lunar Excursion Modual
LF	- Low Frequency (30-300KHz)
LH	- Left Hand
LH	- Lower Half
LHD	- Litterarum Humaniorum Doctor (doctor of human letters)
LI	- Long Island
LIFO	- Last In First Out (see FIFO)
LL	- Late Latin
LLB	- Legum Baccalaureus (bachelor of laws)
LLD	- Legum doctor (doctor of laws)
LM	- Lunar Modual
LMC	- Large Magellanic Cloud (see SMC)
LNG	- Liquified Natural Gas
LP	- Low Pressure
LPG	- Liquified Petroleum Gas
LPG	- Low Pressure Gas
LPN	- Licensed Practical Nurse
LRC	- Logitudinal Redundancy Character
LS	- Left Side
LS	- Letter Signed
LS	- Locus Sigilli (place of seal)
LSD	- LySergic aciD
LSI	- Large Scale Integration
LSS	- Life Support System
LT	- Long Ton
LT	- Low Tension
LTC	- Leautenant Colonel
LTJG	- Lieutenant Junior Grade
LTL	- Less than Truckload Lot
LUG	- Local Users Group
LZ	- Landing Zone
MARC	- MAchine Readable card Catalog
MBA	- Masters Business Adminstration
MC	- Master of Ceremonies
MCPO	- Master Chief Petty Officer
MD	- Medical Doctor
MD	- Monts after Date
ME	- Mechanical Engineer
MEd	- Masters of EDucation
MeV	- Million Electron Volts
MF	- Medium Frequency (300-3000KHz)
MF	- Middle French
MFA	- Masters Fine Arts
MG	- Machine Gun
MG	- Major General
MG	- Military Government
MHz	- Mega HertZ (unit of frequency, 1,000,000 cycles per second)
MI	- Military Intelligence
MIA	- Missing In Action
MIMD	- Multiple Instruction, Multiple Data
MIPS	- Million Instructions Per Second
ML	- Middle Latin
MLD	- Minimum Lethal Dose
MM	- Maryknoll Missioners
MMU	- Memorey Management Unit
MO	- Mail Order
MO	- Medical Officer
MO	- Modus Operandi
MO	- Money Order
MOS	- Metal Oxide Semiconductor
MP	- Melting Point
MP	- Member of Parliment
MP	- Metropolitan Police
MP	- Military Police(man)
MPG	- Miles Per Gallon
MPH	- Miles Per Hour
MS	- ManuScript
MS	- Master of Science
MS	- Military Science
MS	- Motor Ship
MS	- Multiple Sclerosis
MSG	- MonoSodium Glutimate
MSL	- Mean Sea Level
MSS	- ManuScriptS
MST	- Mountain Standard Time
MT	- Metric Ton
MT	- Mountain Time
MTBF	- Minimum Time Between Failures
MUF	- Maximum Usable Frequency (max freq during sunspot activity)
MX	- Missle eXperimental
N	- North
NA	- North America
NA	- Not Applicable
NAACP	- National Association for the Advancement of Colored People
NADGE	- NATO Air Defense Ground Environment
NAR	- Nuclear Acoustic Resonance
NAS	- National Academy of Sciences
NASA	- National Aeronautics and Space Association
NATO	- North Atlantic Treaty Organization
NB	- Nota Bene
NB	- New Brunswick
NBC	- National Broadcasting Company
NBFM	- NarrowBand Frequency Modulation
NBS	- National Bureau of Standards
NBVM	- Narrow Band Voice Modulation
NC	- No Charge
NCE	- New Catholic Edition
NCO	- Non-Commissioned Officer
NCR	- National Cash Register
NCV	- No Commercial Value
ND	- No Date
NDEA	- Natioanl Defense Education Act
NDSL	- National Defense Student Loan
NE	- New England
NEB	- New English Bible
NEI	- Not Elsewhere Included
NES	- Not Elsewhere Specified
NET	- National Educational Telivision
NF	- No Funds
NG	- National Guard
NG	- No Good
NHI	- National Health Insurance
NHI	- National Health Insurance
NIH	- Natioanl Institute of Health
NIM	- Nuclear Instrumentation Modual (a std)
NLRB	- National Labor Relations Board
NM	- Nautical Mile
NM	- Night Message
NM	- No Mark; Not Marked
NMR	- Nuclear Magnetic Resonance
NNE	- North North East
NNW	- North North West
NOS	- Not Otherwise Specified
NP	- No Protest
NP	- Notary Public
NP	- Noun Phrase
NPN	- NonProtein Nitrogen
NRA	- National Riffle Association
NRC	- National Research Council
NRE	- Non-Recurring Engineering (as in NRE costs)
NRL	- Navel Research Labs
NRZ	- Non-Return to Zero
NS	- Not Specified
NS	- Nuclear Ship
NSA	- National Sucurity Agency
NSC	- Natioanl Security Council
NSF	- National Science Foundation
NSF	- National Science Foundation
NSW	- New South Whales
NT	- New Testament
NT	- Northern Territory
NTC	- New York City
NTP	- Normal Temperature and Pressure (see STP)
NTSB	- National Transportation Safty Board
NU	- Name Unknown
NUSC	- Naval Underwater Systems COmmand
NW	- North West
NWT	- North West Territories
NYSE	- New York Stock Exchange
NZ	- New Zealand
OA	- Office Automation
OAS	- Organization Of American states
OCS	- Officer Candadate School
OCLC	- Online Computer Library Center (Ohio College Library Catalog)
OD	- Over Dose
OD	- Doctor of Optometry
OE	- Old English
OED	- Oxford English Dictionary
OEM	- Original Equipment Manufacturer
OEO	- Office of Economic Opportunity
OES	- Order of the Eastern Star
OF	- Old French
OFM	- Order of Friars Minor
OFS	- Order of Free State
OG	- Original Gum
OJT	- On the Job Training
ON	- Old Norse
OP	- Observation Post
OP	- Order of Preachers
OP	- Out of Print
OR	- Operatng Room
OR	- Owner's Risk
OROM	- Optical Read Only Memorey
OS	- Oculus sinister (left eye)
OS	- Ordinary Seaman
OS	- Out of Stock
OSB	- Order of St. Benedict
OSCAR	- Orbiting Satelite Carry Amateur Radio (1st launched 12 Dec 1961)
OSF	- Order of St. Fransis
OT	- Old Testament
OT	- OverTime
OTC	- Over The Counter stocks
OTH-B	- Over The Horizon - Backscatter (as in radar)
OTS	- Officers' Training School
PA	- Per Annum
PA	- Power of Attorny
PA	- Press Agent
PA	- Private Account
PA	- Public Address
PA	- Purchacing Agent
PBX	- Private Branch eXchange (mini-telephone network system)
PC	- Personal Computer
PC	- Pease Corps
PC	- PerCent; PerCentage
PC	- Post Card
PC	- Post Cibum (after meals)
PCB	- Printed Circuit Board
PCS	- Permanent Change of Station
PD	- Per Diem
PD	- Police Department
PD	- Potential Difference
PDQ	- Pretty Damned Quick
PDP	- Programmed Data Processor
PDT	- Pacific Daylight Time
PE	- Physical Education
PE	- Printer's Error
PE	- Professional Engineer
PE	- Protestant Episcopal
PE	- Phase Encoded
PHA	- Pulse Height Analyser (or Analysis)
PhysRev	- Physical Review Journal   - Phys Rev
PLA	- Programmable Logic Array
PLL	- Phase Lock Loop
PM	- PayMaster
PM	- Police Magistrate
PM	- Post Meridiem
PM	- PostMaster
PM	- PostMortem
PM	- Prime Minister
PM	- Provost Marshal
PN	- Promissory Note
PO	- PettyOfficer
PO	- Post Office
PO	- Postal Order
POC	- Port Of Call
POD	- Pay On Delivery
POE	- Port Of Embarkation
POE	- Port Of Entry
POW	- Prisoner Of War
PP	- Parcel Post
PP	- Past Participle
PPB	- Parts Per Billion
PPC	- Pour Prendre Conge' (to take leave)
PPM	- Parts Per Million
PPN	- parameterized post-Newtonianformalism for general relativity
PPT	- Pulse Pair Timing
PQ	- Province of Quebec
PR	- Puerto Rico
PR	- PayRoll
PR	- Public Relations
PROM	- Programmable Read Only Memory
PS	- PostScript
PS	- Public School
PSG	- Platoon Sargeant
PST	- Pacific Standard Time
PT	- Pacific Time
PT	- Physical Therapy
PT	- Physical Training
PT	- Patrol Torpedoe (as in PT boat)
PTA	- Parent-Teacher Association
PTO	- Please Turn Over
PVO	- Pioneer Venus Orbiter
PW	- Prisoner of War (usually POW)
PX	- Post eXchange
QC	- Queen's Council
QD	- Quaque Die (daily)
QDA	- Quantity Discount Agreement
QED	- Quod Erat Demonstrandum (which was to be demonstrated)
QEF	- Quod Erat Faciendum (which was to be done)
QEI	- Quod Erat Inveniendum (which was to be found out)
QID	- Quater In Die (four times a day)
QM	- QuarterMaster
QMC	- QuarterMaster Corps
QMG	- QuarterMaster General
RA	- Regular Army
RA	- Royal Academy
RAAF	- Royal Astralian Air Force
RADM	- Rear ADMiral
RAF	- Royal Air Force
RAM	- Random Access Memory
RB	- Rhythm and Blues (commonly R and B)
RBC	- Red Blood Cells
RBC	- Red Blood Count
RBI	- Runs Batted In
RC	- Red Cross
RC	- Resistor-Capacitor circuit (as in filters)
RC	- Roman Catholic
RCAF	- Royal Canadian Air Force
RCMP	- Royal Canadian Mounted Police
RD	- Rural Delivery
RD	- Research and Development (commonly R and D)
REA	- Rail Express Agency
REM	- Rapid Eye Movement
RF	- Radio Frequency
RFD	- Rural Free Delivery
RFI	- Radio Frequency Interference
RH	- Right Hand
RIP	- Rest In Peace
RLL	- Run Length Limited
RN	- Registared Nurse
RN	- Royal Navy
RNZAF	- Royal New Zealand Air Force
ROG	- Receipt Of Goods
ROM	- Read Only Memory
ROTC	- Reserve Officers' Training Corps
ROYGBIV	- Red, Orange, Yellow, Green, Blue, Indigo, Violet
RPM	- Revelutions Per Minute
RPO	- Railway Post Office
RPS	- Revelutions Per Second
RPV	- Remotely Piloted Vehicle
RR	- RailRoad
RR	- Rural Route
RS	- Recording Secretary
RS	- Revised Status
RS	- Right Side
RS	- Royal Society
RSV	- Revised Standard Edition
RSVP	- Repondez S'il Vous Plait (please reply)
RSWC	- Right Side up With Care
RT	- RadioTelephone
RTTY	- Radio Teletype
RW	- Right Worshipful
RW	- Right Worthy
S	- South
SA	- Salvation Army
SA	- Seaman Apprentice
SA	- Sex Appeal
SA	- Sine Anno (without date)
SA	- SOuth Africa
SA	- Subject to Approval
SAA	- South Atlantic Anomaly
SAC	- Strategic Air Command (see TAC)
SAM	- Surface to Air Missile
SAP	- Second Audio Program
SBA	- Small Business Administration
SCADC	- Standard Central Air Data Computer
SDI	- Stategic Defence Initiative
SEC	- Security Exchange Commission
SEM	- Scanning Electron Microscope
SHF	- Super High Frequency (3-30GHz)
SI	- Staten Island
SIMD	- Single Instruction, Multiple Data
SJ	- Society of Jesus
SL	- Salvage Loss
SLA	- Special Libraries Association
SLAN	- Sine Loco, Anno, (vel) Nomine (without place, year, or name)
SLBM	- Submarine Launched Ballistic Missles
SMA	- Sargeant Major of the Army
SMC	- Small Magellanic Cloud (see LMC)
SMD	- Storage Modual Device (interface standard for disk drives)
SMD	- Surface Mounted Devices
SMERSH	- Abbr. of Russian phrase meaning "Death to the spies."
SMM	- Solar Maximum Mission
SN	- Super Nova
SNR	- Signal to Noise Ratio
SO	- Seller's Option
SO	- Significant Other
SO	- Strike Out
SOH	- Start Of Header, ASCII contol character (dec=01,control-A)
SOP	- Standard Operating Procedure
SP	- Shore Patrol
SPCA	- Society for the Prevention of Cruelty to Animals
SPCC	- Society for the Prevention of Cruelty to Children
SRB	- Solid fuel Rocket Booster
SRO	- Standing Room Only
SSA	- Society Security Administration
SSB	- Single Side Band
SSE	- South-SouthEast
SSG	- Staff SeGeant
SSI	- Small Scale Integration
SSR	- Secondary Surveillance Radar
SSTV	- Slow Scan TeleVision
SSW	- South-SouthWest
ST	- Short Ton
STD	- Sacrae Theolgiae Doctor (doctor of sacred theology)
STL	- St. Louis (airport designation)
STOL	- Short TakeOff and Landing
STP	- Standard Temperature and Pressure (see NTP)
SW	- South West
TAC	- Tactical Air Command (see SAC)
TB	- TuBerculosis
TBA	- To Be Announced
TC	- Teachers College
TD	- TouchDown
TD	- Treasury Department
TDY	- Temporary DutY
TIA	- Thanks In Advance (special to USENET)
TID	- Tir In Die (three times a day)
TKO	- Technical Knock Out
TL	- Total Loss
TLC	- Tender Loving Care
TM	- TradeMark
TMO	- Telephone Mony Order
TPC	- The Phone Company
TO	- Telegraph Office
TO	- Turn Over
TTL	- Transistor Transistor Logic
TTY	- TeleTYpe
TV	- TeleVision
TVA	- Tennesee Valley Authority
TWIMC	- To Whom It May Concern
TWT	- Traveling Wave Tube
TWX	- TeletypeWriter eXchange
UAR	- United Arab Republic
UART	- Universal Asynchronous Receiver Transmitter
UCSD	- University of California at San Diego
UFO	- Unidentified Flying Object
UH	- Upper Half
UHF	- Ultra High Frequency
UHF	- Ultra High Frequency (300-3000MHz)
UK	- United Kingdom
UL	- Underwriter Laboratory
UMT	- Universal Military Training
UN	- United Nations
UNESCO	- United Nations Educational, Scientific, & Cultural Organization
UNICEF	- UNIted nations Children's Emergency Fund (now United Nat. Child. Fund)
UNIX	- Not an acronym at all.  Was a joke on MIT's MULTICS.
UPS	- Uninterruptable Power Supply
UPS	- United Parcel Service
USA	- United States Army
USA	- United States of America
USAF	- United States Air Force
USCG	- United States Coast Guard
USDA	- United States Department of Agriculture
USES	- United States Employment Service
USIA	- United States Information Agency
USM	- United States Mail
USMC	- United States Marine Corps
USN	- United States Navy
USO	- United Service Organizations
USP	- United States Pharmacopeia
USPS	- United States Postal Service
USS	- United States Ship
USSR	- Union of Soviet Socialist Republics
UV	- UltaViolet
UW	- UnderWriter
VA	- Veterans Administration
VAR	- Value Added Remarketers
VAT	- Value Added Tax
VAX	- Virtual Address eXtended
VCO	- Voltage Controlled Oscillator
VD	- Venerial Disease
VF	- Video Freqency
VFW	- Volunteer Fire Department
VG	- Very Good
VG	- Vicar-General
VHF	- Very High Frequency (30-300MHz)
VHSIC	- Very High Speed Integrated Circuit
VIP	- Very Important Person
VISTA	- Volunteers In Service To America
VJ	- Video Jockey
VL	- Vugar Latin
VLA	- Very Large Array radio telescope in Arizona or New Mexico
VLF	- Very Low Frequency (3-30KHz)
VLSI	- Very Large Scale Integration
VM	- Virtual Memory
VOA	- Voice Of America
VRC	- Vertical Redundancy Character
VTOL	- Vertical TakeOff and Landing
VVSS	- Vertical Volute Spring Suspension
W	- West
WA	- Western Astralia
WAC	- Womens Air Corps
WARC	- World Administrative Conference
WB	- Water Ballast
WB	- WayBill
WBC	- White Blood Cells
WC	- Water Closet
WC	- Without Charge
WCTC	- Women's Christian Temperance Union
WHBL	- World Home Bible League
WORM	- Write Once, Read Many time
WSI	- Wafer Scale Integration
WSW	- West-SouthWest
WU	- Washington University
WW	- World War
XD	- without Dividend
XL	- eXtra Large
XO	- eXecutive Officer
XMTR	- transMiTeR (the X is for trans)
XOR	- eXclusive OR (logical function)
XTAL	- crysTAL (another version of x for crys, see XMTR)
XSECT	- cross SECTion
YB	- YearBook
YMCA	- Young Mens Christian Association
YMHA	- Young Mens Hebrew Association
YOB	- Year Of Birth
YT	- Yukon Territory
YWCA	- Young Womens Christian Association
YWHA	- Young Womens Hebrew Association
Z	- Zenith
Z	- Zero
ZB	- Zero Beat
ZETA	- Zero Energy Thermonuclear Assembly
ZGS	- Zero Gradient Synchrotron
ZI	- Zonal Index
ZIP	- Zone Improvement Plan (post office code)
ZK	- barrage balloon (navy symbol)
ZPG	- Zero Population Growth
ZPRSN	- Zurich Provisional Relative Sunspot Number
ZST	- Zone Standard Time
ZT	- Zone Time