sort by Rank | Alpha
| Possible Meanings | Rank |
| Peace and International Relations | **** |
| Protection and Advocacy for Individual Rights | **** |
| Protection Advocacy for Individual Rights | *** |
| Planning and Institutional Research | *** |
| Patient Advocates in Research | *** |
| Political Asylum Immigration Representation | *** |
| Preliminary Assessment Information Reporting | *** |
| Preventing Abuse in Relationships | *** |
| Plan Activity and Intent Recognition | *** |
| Patent Application and Information Retrieval | ** |
| palliative accelerated irradiation regimen | ** |
| Partnership Award for the Integration of Research | ** |
| Pulse Air Injection Reaction | ** |
| precise and accurate inversion recovery | ** |
| Precise and accurate inversion-recovery | ** |
| Puncture, aspiration, injection, and reaspiration | ** |
| Puncture Aspiration Injection Reaspiration | ** |
| Partnership Awards for the Integration of Research | ** |
| Planning Assessment and Institutional Research | ** |
| Personal Assessment of Intimacy in Relationships | ** |
| Pulse Air Injection Reactor | ** |
| Poor Artists in Residence | ** |
| Peer Allocated Instant Response | ** |
| Professional Artists in Residence | ** |
| Psychiatric Assertive Identification and Referral | ** |
| Parents Associates of the Institutionalized Retarded | * |
| Preliminary Assessment and Information Reporting | * |
| Pro Ag Internet Risk | * |
| Pennsylvania Association of Information and Referral | * |
| Public Agencies International Research | * |
| Partnerships for Academic Industrial Research | * |
| POST ACTIVITIES AND INFORMATION REGISTRATION | * |
| Preliminary Analysis Inspection Reporting | * |
| Professional Association of Interns and Residents | * |
| Protection Advocacy of Individual Rights | * |
| Protection and Advocacy of Individual Rights | * |