| Acronym | Meaning |
 | PPQT | Pre-Production Qualification Test |
| PPS | Post Postscriptum - Precise/Precision Positioning Service (GPS) - PolyPhenylene Sulfide |
| PQ | Province Of Qu?bec (obsolete Postal Code |
| PR | Public Relations -Puerto Rico (postal Symbol; ISO 3166 Digram) |
| PR | Praseodymium |
| PRBO | Point Reyes Bird Observatory |
| PRC | People's Republic Of China |
| PRFG | Partial Fog (METAR Code) |
| PRI | Puerto Rico (ISO 3166 Trigram) |
| PRK | Democratic People's Republic Of Korea (ISO 3166 Trigram) |
| PRM | Personnel Readiness Management |
| PRN | Pro Re Nata (Latin |
| PRT | Portugal (ISO 3166 Trigram) -Provincial Reconstruction Team |
| PRY | Paraguay (ISO 3166 Trigram) |
| PS | Palestine (ISO 3166 Digram) -Personnel Services -petasiemens -post Scriptum (Latin |
| PS | Pashto Language (ISO 639-1 Code) - Picosecond |
| PS | Petasecond |
| PS | Picosiemens |
| PSA | Paralysis Society Of America - Pharmaceutical Society Of Australia - Pressure-Sensitive Adhesive - Production Services Association - Prostate Specific Antigen - Public Service Announcement - Public Service Association |
| PSC | Primary Somatosensory Cortex |
| PSE | Palestine (ISO 3166 Trigram) |
| PSG | Pacific Seabird Group |
| PSI | Portable Source Initiative |
| PSO | Peace Support Operations - Primary Standardisation Office (ABCA) - Protocol Supporting Organization (of The ICANN) |
| PSS | Personnel System Support |
| PST | Pacific Standard Time (UTC-8 Hours) |
| PSV | Philips Sport Vereniging (Dutch For Philips Sports Union) - Public Service Vehicle |
| PSYOP | Psychological Operations |
| PT | Petatesla -Physical Training (in The Army) -Portugal (ISO 3166 Digram) |
| PT | Picotesla |
| PT | Platinum |
| PT | Portuguese Language (ISO 639-1 Code) |
| PTA | Parent-Teacher Association |
| PTAL | Public Transport Accessibility Level |
| PTAN | Precision Terrain Aided Navigation |
| PTFE | PolyTetraFluoroEthylene |
| PTL | Patrol -Primary Target Line |
| PTO | Patent & Trademark Office - Please Turn Over |
| PTSD | Post-Traumatic Stress Disorder |
| PTUI | Plain-Text User Interface (pa-too-ey) (cf CLI) |
| PU | Guinea-Bissau (FIPS 10-4 Country Code) -Polyurethane -United States Miscellaneous Pacific Islands (ISO 3166 Digram; Obsolete 1986) |
| PU | Plutonium |
| PUB | Publication |
| PUG | PET Users Group |
| PUN | Pull-Up Network |
| PUP | Pull-Up Point |
| PUS | Pashto Language (ISO 639-2 Code) |
| PUS | United States Miscellaneous Pacific Islands (ISO 3166 Trigram; Obsolete 1986) |
| PV | Petavolt |
| PV | Picovolt |
Browse by Letter:
