| Acronym | Meaning |
 | PAROS | Prevention Of An Arms Race In Outer Space (treaty) |
| PARP | (NATO Partnership For Peace) Planning And Review Process |
| PARWIG | Power Augmented Ram Wing In Ground (aeroplane Wing Shape) |
| PAS | See Entry |
| PASA | PolyAmide |
| PASGT | Personnel Armor System |
| PASR | Personnel Accounting And Strength Reporting |
| PATH | Port Authority Trans-Hudson |
| PAWS | Phased Array Warning System - Progressive Animal Welfare Society |
| PAYD | Pay As You Drive |
| PAYE | Pay As You Earn |
| PB | PolyButylene |
| PB | Lead (Latin Plumbum) |
| PBB | PolyBrominated Biphenyl |
| PBCK | Problem Between Chair And Keyboard (computer Help Desk In-joke) |
| PBD | PolyButaDiene |
| PBDE | PolyBrominated Diphenyl Ether |
| PBI | PolyBenzImidazole |
| PBN | PolyButylene Naphthalate |
| PBS | Public Broadcasting Service |
| PBT | PolyButylene Terephthalate |
| PBX | Private Branch EXchange (company Phone System) |
| PC | Petacoulomb - U.S. Pacific Islands Trust Territory (ISO 3166 Digram; Obsolete 1986) -Personal Computer - Player Character (roleplaying) - Politically Correct / Political Correctness - Post Cibum (Latin |
| PC | Picocoulomb |
| PCAS | Planet-Crossing Asteroid Survey |
| PCB | See Entry |
| PCC | NATO Partnership Coordination Cell - Posterior Cingulate Cortex - Pre-Command Course - Presidents Conference Committee |
| PCCB | Porsche Ceramic Composite Brake |
| PCCIP | President's Commission On Critical Infrastructure Protection |
| PCE | PerChlorEthylene |
| PCI | U.S. Pacific Islands Trust Territory (ISO 3166 Trigram; Obsolete 1986) -Peripheral Component Interconnect (computer Bus) |
| PCIE | Peripheral Component Interconnect Express (computer Bus) |
| PCL | Passive Coherent Location |
| PCMCIA | Personal Computer Memory Card International Association (People Can't Memorise Computer-Industry Acronyms) |
| PCN | Pitcairn Islands (ISO 3166 Trigram) |
| PCP | Phencyclidine - Pneumocystis Jiroveci Pneumonia (formerly Peumocystis Carinii) -Probabilistically Checkable Proof |
| PCR | Polymerase Chain Reaction |
| PCTE | Portable Common Tool Environment;Punjab College Of Technical Education |
| PCZ | Panama Canal Zone (ISO 3166 Trigram; Obsolete 1980) |
| PD | Per Diem (Latin: (calculated) By The Day) - Point Of Departure - Police Department - Postal District - Potential Difference - Principal Deputy - Public Domain |
| PD | Palladium |
| PDA | Personal Digital Assistant - Predicted Drift Angle - Public Display Of Affection - Push-Down Automaton |
| PDD | Past Due Date - Presidential Decision Directive |
| PDF | Panama[nian] Defense Forces (abolished 1990) - Portable Document Format - Principal Direction Of Fire |
| PDG | President Director General - Product Development Group |
| PDL | Pure Dumb Luck (Texan Punk Band) |
| PDN | Pull-Down Network |
| PDQ | Pre-Defined Queries (Siebel Packages) - Pretty Damn Quick |
| PDRY | People's Democratic Republic Of Yemen (obsolete Since 1990) |
| PDT | Pacific Daylight [Saving] Time (UTC-7 Hours) |
Browse by Letter:
