| Acronym | Sense | Language | Topics |
|---|---|---|---|
| PPI | Pixel Per Inch | In English | → Operating systems |
| PPIL | Priced Provisioned Item List | In English | → Maintenance and logistics |
| PPJ | People's Plan Japonesia | In English | |
| PPL | Planning Parts List | In English | → Maintenance and logistics |
| PPL | Preferred Parts List | In English | → Maintenance and logistics |
| PPL | Priced Parts List | In English | → Maintenance and logistics |
| PPL | Production Payload | In English | → Astronautics |
| PPL | Program Parts List | In English | → Maintenance and logistics |
| PPL | Provisioning Parts List | In English | → Maintenance and logistics |
| PPL | Private Pilot Licence | In English | → Transport by air |
| PPLMN | Periodic Public Land Mobile Network | In English | → Telecommunications |
| PPM | Perl Package Manager | In English | → Software |
| PPM | Payload Project Manager | In English | → Management → Astronautics |
| PPM | Pulse Position Modulation | In English | |
| PPM | Peak Program Meter | In English | → Acoustical engineering |
| PPME | Pacific Plate Motion Experiment | In English | |
| PPME | Periodica Polytechnica Mechanical Engineering | In English | → Serial publications, periodicals → Mechanical engineering |
| PPMS | Project Performance Measurement System | In English | |
| PPMtO | Publications of the Purple Mountain Observatory | In English | → Serial publications, periodicals → Astronomy |
| PPN | Physics of Particles and Nuclei | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| PPN | Project Programmer Number | In English | → Software |
| PPO | Preferred Provider Organization | In English | |
| PPP | Public Private Partnership = PPP | Partenariat Public-Privé | In French |
In English | → Law, jurisprudence → Public administration, government |
| PPP | Pacific People's Partnership | In English | |
| PPP | Point to Point Protocol | In English | |
| PPP | Payload Patch Panel | In English | → Astronautics |
| PPP | Peak Pulse Power | In English | |
| PPP | Point-to-Point Protocol | In English | → Networks, communication |
| PPPC | Professional and Public Policy Committee | In English | |
| PPPL | Princeton Plasma Physics Laboratory (www.pppl.gov) | In English | → Research institutes → Plasma physics |
| PPQIC | Productivity and Product Quality Improvement Council | In English | → Quality management |
| PPQT | Preproduction Qualification Test | In English | → Quality management → Engineering, technology |
| PPR | Payload Preparation Room | In English | → Astronautics |
| PPR | Program Planning Review | In English | → Management |
| PPRB | Preliminary Proposal Review Board | In English | |
| PPS | Partial-Pressure Suit | In English | → Astronautics |
| PPS | Payload Pointing System | In English | → Astronautics |
| PPS | Pneumatic Power Subsystem | In English | |
| PPS | Primary Propulsion System | In English | → Vehicle engineering |
| PPS | Printer/Plotter System | In English | |
| PPS | Product Performance System | In English | |
| PPS | Provisioning Performance Schedule | In English | |
| PPS | Pulses Per Second | In English | |
| PPS | Proceedings of the Physical Society | In English | → Serial publications, periodicals → Physics |
| PPS | Primer Pair Selection | In English | → Software → Biotechnology → Genetics → Biochemistry, biophysics |
| PPSL | Program Parts Selection List | In English | → Maintenance and logistics |
| PPSL | Proceedings of the Physical Society of London | In English | → Serial publications, periodicals → Physics → United Kingdom |
| PPT | Prelaunch Package Test | In English | → 67973 → Astronautics |
| PPTE | Periodica Polytechnica Transportation Engineering | In English | → Serial publications, periodicals → Vehicle engineering → Transport and postal services |
| PPTEn | Polymer-Plastics Technology and Engineering | In English | → Serial publications, periodicals → Plastic industry |
| PPWCP | Packard Pediatric Weight Control Program | In English | → Nutrition |
| PQA | Procurement Quality Assurance | In English | → Quality management → 34745 |
| PQC | 0056, Procurement Quality Control | In English | → 34745 |
| PQC | Product Quality Council | In English | → Quality management |
| PQE | Procurement Quality Engineering | In English | → Quality management → 34745 |
| PQE | Progress in Quantum Electronics | In English | → Serial publications, periodicals → Quantum mechanics → Electronics |
| PQFP | Plastic Quad Flat Pack | In English | → Electronics |
| PQGS | Propellant Quantity Gauging System | In English | → Astronautics |
| PQIC | Product Quality Improvement Council | In English | → Quality management |
| PQIC | Productivity and Quality Improvement Council | In English | → Quality management |
| PQQ | Pre-Qualification Questionnaire | In English | |
| PQQ | Pyrroloquinoline Quinone | In English | → Biochemistry, biophysics |
| PQT | Preliminary Qualification Test | In English | |
| PQT | Production Qualification Test | In English | → Quality management → Engineering, technology |
| PR | Public Relations = RP | Relations Publiques | In French = RP | Relations Presse | In French |
In English | → Public relations |
| PR | Purchase Request | In English | → 34745 |
| PR | Performance Report | In English | |
| PR | Position Record | In English | → Records management |
| PR | Pressure Ratio | In English | |
| PR | Pressure Regulator | In English | |
| PR | Problem Report | In English | |
| PR | Procurement Regulation | In English | → 34745 |
| PR | Program Requirement | In English | |
| PR | Pulse Rate | In English | |
| PRA | Participatory Rural Appraisal | In English | → Agricultural sciences |
| PRA | Precession Axis | In English | |
| PRA | Professional Rugby Players Association | In English | → Associations → Football and rugby |
| PRA | Plan de Reprise d'Activité | In English | → Management |
| PrAA | Progress in Astronautics and Aeronautics | In English | → Serial publications, periodicals → Astronautics → Aeronautics, aircraft |
| PRACA | Problem Reporting And Corrective Action | In English | → Management |
| PRACH | Packet Random Access Channel | In English | → Telecommunications |
| PrAeS | Progress in Aerospace Sciences | In English | → Serial publications, periodicals → Astronomy → Aeronautics, aircraft → Astronautics |
| PRAI | Pattern Recognition and Artificial Intelligence | In English | → Software |
| PrAst | Practical Astronomy | In English | → Serial publications, periodicals → Astronomy |
| PRB | Panel Review Board | In English | |
| PRB | Parachute Refurbishment Building | In English | → Aeronautics, aircraft → Astronautics |
| PRB | Program Review Board | In English | → Management |
| PRB | Program Requirements Baseline | In English | → Management |
| PRB | President's Review Board | In English | |
| PRC | Pharmacotherapy Research Center | In English | → Research institutes → Pharmacology, toxicology |
| PRCB | Program Requirements Change Board | In English | → Management |
| PRCB | Program Requirements Control Board | In English | → Management |
| PRCB | Program Review Control Board | In English | → Management |
| PRCBD | Program Requirements Control Board Directive | In English | → Management |
| PRCO | Publications of the Riverview College Observatory | In English | → Serial publications, periodicals → Astronomy |
| PRCS | Primary Reaction Control System | In English | |
| PRD | Payload Requirements Document | In English | → Astronautics |
| PRD | Personal Radiation Dosimeter | In English | |
| PRD | Preliminary Requirements Document | In English | |
| PRD | Procurement Regulation Directive | In English | → 34745 |
| PRD | Procurement Requirements Document | In English | → 34745 |
| PRD | Program Requirements Document | In English | → Management |
| PRD | Project Requirements Document | In English | → Management |
| PRDA | Program Research and Development Announcement | In English | → Research policy → Engineering, technology |
| PRDLA | Pacific Rim Digital Library Alliance | In English | → Libraries → Organizations and associations |
| PRE | Personal Rescue Enclosure | In English | |
| PRE | Power Regulation Equipment | In English | → Electrical engineering |
| PrECS | Progress in Energy and Combustion Science | In English | → Serial publications, periodicals → Thermodynamics |
| PREMIA | Pattern Recognition and Machine Intelligence Association | In English | → Associations → Artificial intelligence → Computer-based techniques |
| PreR | Precambrian Research | In English | → Serial publications, periodicals → Palaeontology |
| PRESCO | Practical Recommendations for Sustainable Construction | In English | → Construction |
| PRESENCCIA | Presence & Research Encompassing Sensory Enhancement, NeuroScience, Cerebral-Computer Interfaces and Applications | In English | → Human-computer interaction → Neurology |
| PREST | Policy Research in Engineering, Science and Technology | In English | → Politics → Mathematics and natural sciences → Applied sciences, technology |
| PrEx | Propellants and Explosives | In English | → Serial publications, periodicals → Vehicle engineering |
| PrExP | Propellants and Explosives Pyrotechnics | In English | → Serial publications, periodicals → Vehicle engineering |
| PRF | Pulse Repetition Frequency | In English | → Telecommunications |
| PRI | Primary Rate Interface | In English | → Telecommunications |
| PRIDE | Pacific Regional Initiatives for the Delivery of basic Education | In English | |
| PRIM&R | Public Responsibility In Medicine and Research | In English | → Research policy → Medicine |
| PRIME | Privacy and Identity Management for Europe | In English | |
| PRIP | Pattern Recognition and Image Processing | In English | → Graphical processing → Image processing |
| PRIS | Payload Remote Integration System | In English | → Astronautics |
| PRISCILLA | Bus PRiority strategies and Impact SCenarIos deveLoped on a Large urban Area | In English | → Transport and postal services |
| PRISM | Pacific Regional Information SysteM | In English | → Computer science → Telecommunications |
| PRISM | Pacific Roundtable on Industry, Society and Management | In English | → Management → Social sciences → Economics |
| PRISM | Process Industries Safety Management | In English | → Engineering, technology |
| PRISM | Partnership for Research Infrastructures in Earth System Modeling (http://prism.enes.org) | In English | → Earth sciences |
| PRisMa | Portfolio Risk Management | In English | → Management → Finance → Financial markets |
| PRISMATICA | Pro-active Integrated Systems for Security Management by Technological Institutional and Communication Assistance | In English | |
| PRL | Page Revision Log | In English | |
| PRL | Payload Retention Latch | In English | → Astronautics |
| PRL | Priority Rate Limiting | In English | |
| PRL | Preferred Retinal Locus | In English | → Ophthalmology |
| PRLA | Payload Retention Latch Actuator | In English | → Astronautics |
| PRLA | Payload Retention Latch Assembly | In English | → Astronautics |
| PRM | Payload Retention Mechanism | In English | → Mechanical engineering → Astronautics |
| PRM | Performance and Reliability Module | In English | |
| PRM | Pocket Radiation Meter | In English | |
| PRM | Posigrade Rocket Motor | In English | → Astronautics |
| PRM | Pulse Rate Modulation | In English | |
| PrMS | Progress in Materials Science | In English | → Serial publications, periodicals → Materials science |
| PRN | Program Release Notice | In English | |
| PRN | Pseudorandom Noise | In English | |
| PRN | Pulse Ranging Navigation | In English | |
| PRO | Planning and Reporting Officers | In English | → Management |
| PRO | Planning Resident Order | In English | |
| PROACT | Programme for Advanced Contactless Technology | In English | → Applied sciences, technology |
| PrOce | Progress in Oceanography | In English | → Serial publications, periodicals → Marine research, oceanography |
| PROE | Publications of the Royal Observatory of Edinburgh | In English | → Serial publications, periodicals → Astronomy |
| PROFETAS | Protein Foods, Environment, Technology and Society | In English | → Food technology → Proteins |
| PROFS | Professional Office Systems | In English | |
| PROGRESS | Programme for Research on Embedded Systems & Software | In English | → Software → Electronics |
| PROM | Programmable Read-Only Memory | In English | → Memories |
| PROMIS | Project-Oriented Management Information System | In English | → Management → Knowledge management |
| ProTon | Public Research Organisations Transfer Office Network | In English | → Organizations and associations → Research policy → Industry, industrial policy → Research institutes |
| PROTON | Public Research Organisations' Technology Offices Network | In English | → Organizations and associations → Research policy → Engineering, technology |
| PROTON | Public Research Organisation | In English | → Organizations and associations → Research policy |
| PRP | Personnel Reliability Program | In English | → Personnel management |
| PRP | Program Redefinition Proposal | In English | → Management |
| PrPh | Progress of Physics | In English | → Serial publications, periodicals → Physics |
| PrPNP | Progress in Particle and Nuclear Physics | In English | → Serial publications, periodicals → Nuclear, atomic, and molecular physics |
| PRPS | Programming Requirements Process Specification | In English | → Software |
| PRR | Parts Replacement Request | In English | → Maintenance and logistics |
| PRR | Parts Rework or Replacement | In English | → Maintenance and logistics |
| PRR | Preflight Readiness Review | In English | → Aeronautics, aircraft → Astronautics |
| PRR | Preliminary Requirements Review | In English | → Management |
| PRR | Production Readiness Review | In English | → Maintenance and logistics |
| PRR | Program Requirements Review | In English | → Management |
| PRR | Project Requirements Review | In English | → Management |
| PRR | Pulse Repetition Rate | In English | → Telecommunications |
| PRRB | Payload Requirements Review Board | In English | → Astronautics |
| PRS | Payload Retention System | In English | → Astronautics |
| PRS | Personal Rescue System | In English | |
| PRS | Personnel Rescue Service | In English | |
| PRS | Power Reactant Subsystem | In English | → Chemicals |
| PRS | Precision Ranging System | In English | |
| PRS | Preliminary Requirements Specification | In English | → Management |
| PRS | Primary Recovery Site | In English | |
| PRS | Primary Rescue Site | In English | |
| PRS | Provisioning Requirements Statement | In English | |
| PRSA | Power Reactant Storage Assembly | In English | → Chemicals |
| PRSC | Poverty Reduction Support Credit | In English | → Finance → Development |
| PRSD | Power Reactant Storage and Distribution | In English | → Chemicals |
| PRSDS | Power Reactant Storage and Distribution System | In English | → Chemicals |
| PRSS | Problem Report Squawk Sheet | In English | |
| PrSS | Progress In Surface Science | In English | → Serial publications, periodicals |
| PRSV | Papaya Ringspot Virus | In English | → Virology → Agricultural sciences |
| PRT | Pulse Repetition Time | In English | |
| PRTLS | Powered Return To Launch Site | In English | → Astronautics |
| PRTR | Pollutant Release and Transfer Register | In English | → 5023 → Environmental technology, water supply, waste management |
| PRV | Pressure-Reducing Valve | In English | |
| PrVP | Proceedings of Vibration Problems | In English | → Serial publications, periodicals → Acoustics |
| PS | Paging Systems | In English | |
| PS | Polystyrene | In English | → Chemicals → Plastic industry |
| PS | PostScript | In English | → Programming languages → Document processing |
| PS | Parachute System | In English | → Aeronautics, aircraft → Astronautics |
| PS | Production Sheet | In English | |
| PS | Payload Specialist | In English | → Astronautics |
| PS | Payload Station | In English | → Astronautics |
| PS | Payload Support | In English | → Astronautics |