| People Respecting Individuals' Similarities and Minorities | Academic & Science |
| Partnership For Research In Stereo Modeling | Academic & Science |
| Practical Resources Interactive Science Materials | Academic & Science |
| Partnership for Research Integrity in Science Medicine | Academic & Science |
| Programming Robotics Imagination Science Math | Academic & Science |
| Professional Results In Sales and Marketing | Business |
| Pensions Retirement Investments Savings And Mortgages | Business |
| Performance and Registration Information Systems Management | Business |
| Professional Resources In Information Systems Management | Business Management |
| Pressure Reactive Intelligent Spark Management | Business Management |
| Project To Revolutionize Information Systems and Management | Business Management |
| Property and Resource Information Systems Management | Business Management |
| Professional Records Information Services Management | Business Management |
| Performance of Routine Information System Management | Business Management |
| Performance and Registration Information System Management | Business Management |
| Programs in Religion Interfaith and Spiritual Matters | Community |
| Primitive Instruction Set Machine | Computing |
| Photo Refractive Information Storage Material | Computing |
| Parallel Reduced Instruction Set Multiprocessing | Computing |
| Preemptive Reconnaissance and Identification Security Mainframe | Computing |
| Publishers Requirements for Industry Standard Metadata | Computing |
| Processor Reconfiguration Through Instruction Set Metamorphosis | Computing |
| Prism | Cryptocurrency |
| People Respecting Important Social Movements | General |
| Photo Recon Intel Strike Module | General |
| Phase Rotated Intense Slow Muon | General |
| Power Reactor Innovative Small Module | General |
| Preservation Reliability Interoperability Security And Metadata | General |
| Public Relations In The Service Of Mankind | General |
| Phase Rotation Intense Slow Muons | General |
| Photo Recon Integrated Strike Module | General |
| Program Of Resources Information And Support For Mothers | General |
| Projects Reflecting Individual Social And Multiple | General |
| Program Review Instrument For Systems Monitoring | General |
| Precision Register For Independent Station Machining | General |
| Precursors Required In Synthetic Manufacturing | General |
| Prepare Respond Inform Secure And Monitor | General |
| People Respecting Individuals And Sexual Minorities | General |
| Peter Readys Incredible Steam Machine | General |
| Performance Reliability And Integrity Of Structures Materials | General |
| Publishing Requirements For Industry Standard Metadata | General |
| Performance Resilience Integration Security And Manageability | General |
| People Really Into Spreading Multiculturalism | General |
| Probably Really Insensitive Southern Muricans | General |
| People Reflecting Ideal Social Mindsets | General |
| Purpose Relationships Independence Service and Mentorship | General |
| Pride Respect Individuality Support and Movement | General |
| Parent Resources In Service of Masada | General |
| Portfolio Risk Impact and Sustainability Measurement | General |
| Premier Recognition In the Specialty of Med | General |
| Planning Resource Implementing Solutions Methodology | Governmental |
| Programme Reducing Individual Substance Misuse | Governmental |
| People Responding In Social Ministry | Governmental |
| Pittsburgh Region International Student Ministries | International |
| Pacific Regional Institute for Science and Mathematics | Maths |
| Patient Risk Information Storage Management | Medical |
| Prospective Record of the Impact and Severity of Menstruation | Medical |
| Planning Tool for Resource, Integration, Synchronization, and Management | Military and Defence |
| Portable Reusable Integrated Software Modules | Softwares |
| Portfolio of Responsible Investments Student Managed | Stock Exchange |
