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Acronyms and abbreviations in English.

An acronym is a word or name formed as an abbreviation from the initial components of a phrase or a word, usually individual letters. There are no universal standards for the multiple names for such abbreviations or for their orthographic styling.


# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
There are 296 terms in this directory beginning with the letter P.
p.
page

p.a.
per annum (per year)

P.A.A.
Phillips Academy, Andover

P.C.
Police Constable

p.m.
post meridiem (after noon)

p.p.
per pro (used before signing in a person's absence)

P.R
Puerto Rico

p.s.
post scriptum

p.w.
per week

P/T
Pre-Tensioner

P02
Partial Pressure of Oxygen

PA
1. personal assistant.
2. Panama.
3. Perfect Attendance.

pa.t.
past tense

PABG
Pack A Big Gun

PAC
1. Public Affairs Committee.
2. Public Accounts Committee.

PACE
Property Advisers to the Civil Estate (Agency of the cabinet office)

PACT
Partnership Against Car Theft

PACTS
Parliamentary Advisory Committee for Transport Safety

PAG
Projections Advisory Group (EUETS, DTI-LED Group)

PAGA
Public Address and General Alarm

PAH
Polycyclic Aromatic Hydrocarbons

PAHO
Pan American Health Organization

PAHs
Polycyclic aromatic hydrocarbons

Palaeogr.
in Palaeography

Palaeont. in Palaeontology; (in titles) Palaeontology, -ical pa. pple.
passive participle, past participle

PAMOC
Properties of Atoms and Molecules in Molecular Crystals

PAN
Planning Advice Note (Scotland)

PAPA
Prepare to Abandon Platform Alarm

PAR
1. PNNI augmented routing.
2. Parabolic Aluminum Reflector.

PARK
Pottstown AMATEUR RADIO KLUB

Partridge
(quoted from) E. Partridges Dictionary of Slang and

PAS
Power Assisted Steering

PAT
Professional Association of Teachers

Path.
(as label) in Pathology; (in titles) Pathology, - ical

PAVD
Physical Agents (Vibration) Directive

PAWA
Portland Amateur Wireless Association

PBA
Predictive Brake Assist

PBB
Polybrominated Biphenyl

PBC
Peak Braking Coefficient

PBD
Programmer Brain Damage

PBDE
Polybrominated Diphenylether

PBIT
Profit Before Interest and Taxation

PBK
1. Phi Beta Kappa.
2. Phonebook.
3. Pro Bike Kit.
4. Perfect Bass Kit.
5. Premier Bath and Kitchen.

PBKAC
Problem Between Keyboard and Chair

PBL
Problem-based learning

PBM
Play By Mail (Games)

PBPR
1. Palm Beach Public Relations.
2. Packed Bed Photo Reactor.
3. Patient based partner referral.

PBR
Pre-Budget Report

PBRS
Packed Bed Reactors

PBS
1. Performance Based Standards (Australia).
2. phosphate-buffered saline.

PBT
1. Polybutylene Terephthalate.
2. Persistent, Bioaccumulative or Toxic.

PC
1. Passenger Car.
2. Public Citizen (US).
3. Personal Computer.
4. Postal Code (United Kingdom).

PCB
1. Polychlorinated Biphenyl.
2. Printed Circuit Board.
3. Please Call Back.

PCD
Programmed cell death

PCFCO
Passenger Car Fuel Consumption Order

PCMB
Prokaryotic Cell and Molecular Biology

PCN
Polychlordinated Naphthalene

PCNTA
Passenger Car National Type Approval

PCR
polymerase chain reaction

PCT
Patent Cooperation Treaty

PCU
Passenger Car Unit

PCV
1. Passenger Carrying Vehicle (Not for hire organisation reward).
2. Passenger Carrying Vehicle.
3. Pedestrian Controlled Vehicle.

PCYLIH
Please Cross Your Legs, I Have Only One Nail Left

PD
1. Public Domain.
2. program director.

PDA
Public Display of Affection

PDB
Progressive Deformable Barrier

PDD
Project Definition Document.

PDE
Picture Display Equipment

PDF
Portable Document Format

PDL
Product Design Lead.

PDM
Product Data Management

PDN
Public Data Network

PDP
Positive Displacement Pump

PDQ
Pretty Damn Quick

PDT
Product Design Team.

PDU
protocol dataunit

PE
1. provider edge.
2. Peru.
3. Physical Education.
4. Preliminary Evaluation.

PEA
Phillips Exeter Academy

PEBCAK
Problem Exists Between Chair And Keyboard

PEBKAC
Problem Exists Between Keyboard And Chair

PEC
Packaging of Explosives for Carriage Regulations

PECA
Protocol (to European Agreement) on European Conformity Assessment

PEEL
Point, Example, Evidence, Link

PEFS
Process Engineering Flow Scheme

PELV
Premature End-of-Life Vehicle

PEM
1. Polymer Electrolyte Membrane.
2. Photo electron microscope.

PEMFC
Proton Exchange Membrance Fuel Cell

PEMS
Portable Emissions Measurement System

PEOD
Program Evaluation and Organizational Development

PEP
Pan-European Programme

perh. perhaps Pers.
Persian

PERKESO
Pertubuhan Keselamatan Sosial Malaysia

pers.
person, -al

PESG
Personal Export Sales Group

PET
Polyethylene Terephthalate

PETM
Paleocene-Eocene Thermal Maximum

Petrogr.
in Petrography

Petrol.
(as label) in Petrology; (in titles) Petrology, - ical

Pettman
(quoted from) C. Pettmans Africanderisms

PF
French Polynesia

pf.
perfect

PF&HOM
Printed, Framed & Hanging On My Wall

PFA
Production Flow Analysis

PFC
1. Perfluorcarbon.
2. Peak Friction Coefficient.

PFCI
Pediatric Functional Capacity Index

PFI
Private Finance Initiative

PFM
Pure fucking Magic

PFY
Pimply Faced Youth

PG
1. Performance Gain.
2. Papua New Guinea.

Pg.
Portuguese

PG(W)PP
Planning Guidance (Wales): Planning Policy (published april 1999)

PGAD
Persistent Genital Arousal Disorder

PGDBM
Post Graduate Diploma in Business Management

PGDCA
Post Graduate Diploma in Computer Application

PGDE
Post Graduate Diploma in Education

PGECET
Post Graduate Engineering Common Entrance Test

PGIMER
Postgraduate Institute of Medical Education and Research

PGP
Post-graduate program

PGS
Post-graduate Studies

PGSWM
Parlimentary Group for Sustainable Waste Management

PGY
Post Graduate Year

PH
Philippines, Republic of the

Pharm.
in Pharmacology

PHAT
Pamoja Hip Afrika Tunawakilisha

PHB
1. per-hop behavior.
2. poly-beta-hydroxybutarate.
3. Polyhydroxybutyrate.

PhD
Piled Higher and Deeper

PHI
Philippines

PHIL
Philippines

Philol.
(as label) in Philology; (in titles) Philology, - ical

Philos.
(as label) in Philosophy; (in titles) Philosophy, - ic

phonet.
phonetic, -ally

Photogr.
(as label) in Photography; (in titles) Photography, -ical

PHP
penultimate hop pop

phr.
phrase

PHVs
Private Hire Vehicles

Phys.
physical; (rarely) in Physiology

Physiol.
(as label) in Physiology; (in titles) Physiology, -ical

PI
1. Performance Indicator.
2. Project Integra (Hants Districts & Unitaries Waste Management Contract).

PIA
1. Petroleum Industry Association.
2. Personal Injury Accident.

PICNIC
Problem In Chair, Not In Computer

Pict.
(in titles) Picture, Pictorial

PID
Pelvic inflammatory disease

PIH
1. prolactin inhibiting hormone.
2. Partners in Health.

PIMO
Paper Industry Materials Organisation

PIMOT
Motor Transport Institute (Poland)

PIMP
Pee In My Pants (of tenin combination)

PINS
Personal Indentification Number String

PIRG
Public Interest Research Group

PITA
Pain In The Ass

PK
Pakistan

PKB
Pot, Kettle, Black!

PKU
Phenylketonuria

PL
Poland

pl., plur.
plural

PlantTFDB
Plant Transcription Factor Database

PLBKAC
Problem Lies Between Keyboard And Chair

PLC
1. phospholipase C
2. ( Plc ) - public limited company

PLEB
Peoples Law Enforcement Board

PLG
Private and Light Goods

PLHA
People Living with HIV/AIDS

PLM
Product Lifecycle Management

PLMKO
Please Let Me Know, Ok?

PLN
peripheral lymph nodes

PLOKTA
Press Lots Of Keys To Abort

PM
1. St. Pierre And Miquelon.
2. Program/Project Manager.
3. Parking Management.
4. Particulate Matter.

PMAC
Primary Ministers Approval Certificate

PMBI
Pardon My Butting In

PMCID
PubMed Central ID

PMETC
Pardon Me,etc.

PMF
Proton Motive Force

PMFBI
Pardon Me For Butting In

PMFBR
Pardon Me For Being Rude

PMFJI
Pardon Me For Jumping In

PMFJIH
Pardon Me For jumping In Here.

PMJI
Pardon My Jumping In

PMMA
Polymethylmethacrylate

PMP
Particulate Measurement Programme

PMR
Private Mobile Radio

PMRSA
Prince Michael Road Safety Awards

PMS
Punctuation Made Simple

PMYMHMMFSWGAD
Pardon Me, You Must Have Mistaken Me for Someone Who Gives A Damn

PN
Pitcairn

PNC
Police National Computer

PNCAP
Primary (safety) New Car Assessment Programme

PNEC
Predicted no Effect Concentration

PNGV
Partnership for a New Generation of Vehicles (USA)

PNNI
Private Network-to-Network Interface

PNS
Peripheral nervous system

POC
1. Point of Connection (electricity).
2. Planning Officers Society (formerly cpos).
3. Prisoner Of Chat.
4. Peeping Other Chatters.

POD
Port/ Point of Destination

poet.
poetic, -al

POETS
Piss On Everything, Tomorrows Saturday; Piss Off Early, Tomorrow

POITS
Piss On It Tomorrows Saturday

Pol.
1. Polish.
2. (as label) in Politics; (in titles) Politics, - al.

Pol. Econ.
in Political Economy

Polit.
(in titles) Politics, -al

POM
Phase Of the Moon

POMP
Pervasive Object Model Project

POMSTER
Placing on the Market and Supervision of Transfer of Explosives Regulations

POP
Point Of Presence; Post Office Protocol

pop.
popular, -ly

POQ
1. Piss Off Quickly.
2. Per Order of Questions.

POQADC
Piss Off Quickly and Dont Come Back!

Porc.
(in titles) Porcelain

POS
Packetover (on) SONET

poss.
possessive

POSSLQ
Person of Opposite Sex Sharing Living Quarters

Pott.
(in titles) Pottery

POTW
Publicly Owned Treatment Works

POV
Point Of View

PP
Polypropylene

PPA
1. Power Purchase Agreement.
2. Pay Per Action.

PPC
1. Pakistan Penal Code.
2. Pay per click.
3. Pollution Prevention & Control Regulations.
4. Planning Policy Guidance.
5. Pollution Prevention Guidance.

PPE
Personal Protective Equipment

PPL
PeoPLe

ppl. a., pple. adj.
participial adjective

pple.
participle

PPM
1. Public Performance Measure.
2. Parts per Million.

PPN
Programmer Project Number (currently known as User ID)

PPORD
Product and Process Oriented Research and Development (Reach)

PPP
1. Petty Pet Peeve.
2. Pointto Point Protocol.
3. Public Private Partnerships.

PPPP
Previous Paragraph was Polemical Position

PPT
Powe Pallet Truck, Similar to FLT

PPTS
Prospective Piloted Transport System (Russian Federal Space Agency)

PQQ
Pre-Qualifications Questionaire

PR
1. public relations.
2. Puerto Rico.
3. Problem Report.
4. Project Request.
5. Page Rank.
6. Producer Responsibility.

Pr.
1. Provencal
2. ( pr. ) - present

pr. pple.
present participle

PRA
Petrol Retailers Association

Pract.
(in titles) Practice, -al

PRCO
Policing and Reducing Crime

PRCU
Policing and Reducing Crime Unit

PRD
Program Requirements Document.

prec.
preceding (word or article)

pred.
predicative

pref.
prefix

pref., Pref.
preface

prep.
preposition

pres.
present

PRG
Producer Responsibility Group

PRH
Prolactin releasing hormone

PRI
Prevention Routiere International

PRIA
Partial Regulatory Impact Assessment

Princ.
(in titles) Principle, -s

priv.
privative

PRN
Packaging Recovery Note (Proof of Compliance under Packaging Regs)

PRO
Producer Responsibility ObligationS (Packaging Waste) RegulationS

prob.
probably

Probl.
(in titles) Problem

Proc.
(in titles) Proceedings

pron.
pronoun

pronunc.
pronunciation

prop.
properly

Pros.
in Prosody

Prov.
Provencal

PS
1. Post Scriptum.
2. Post Script.
3. Play Station.
4. Palestine.
5. Physical Science.
6. Pull Sits.
7. Public Sewer.
8. Polystyrene.

PSA
Public Service Agreement

PSAE
1. Pittsburgh Society of Association Executives.
2. Prairie State Achievement Examination.

PSAS
Persistent Sexual Arousal Syndrome

PSB
Programme Supervisory Board

PSBRTF
Penn State Bus Research and Testing Facility

PSC
PHB scheduling class

PSDB
Police Scientific Development Branch

PSDE
Programme for the Study of Discrimination and Exclusion

PSE
Ponce, Puerto Rico Airport code. Mercedita Airport.

PSPF
Public Symphisis Peak Force

PSR
Passenger Services Requirement

PSSH
Physical Symbol System Hypothesis

PSSM
1. Position-specific scoring matrix.
2. Persatuan Sains Sosial Malaysia (Malai).

PSSRU
Personal Social Services Research Unit (UK)

PSTC
Pak Swiss Training Centre

PSTN
Public Switched Telephone (Telephony) Network

PSVAR
Public Service Vehicle Accessibility Regulations

Psych.
in Psychology

Psychol.
(as label) in Psychology; (in titles) Psychology, -ical

PT
1. Physical Training.
2. Portugal.
3. Public Transport.

PTA
Passenger Transport Authority

PTB
Powers That Be

PTE
Passenger Transport Executive

PTI
1. Pennsylvania Transport Institute.
2. Periodic Technical Inspection.

PTM
Please Tell Me

PTMM
Please Tell Me More

PTO
1. Patent and Trademark Office (USGovt).
2. Please Turn Over.
3. Permission To Officiate.

PTT
Push to Talk

PTW
Powered Two Wheeler

Publ.
(in titles) Publications

PUBS
Publications

PUOSU
Put Up Or Shut Up

PUWER
1. Provision & Use of Work Equipment Regulations 1988.
2. Proposed Provision & Use of Work Equipment Regulations 1997.

PV-UK
British Photovoltaic Association

PVC
1. Polyvinyl Chloride.
2. permanent virtual circuit.

PW
1. Pathetic Wanker.
2. Pow Wow.
3. Palau.

PWG
Pathology Working Group

PWT
Penny weight (see also dwt)

PY
Paraguay

PYLUSD
Placentia Yorba Linda Unified School Distericct

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