sort by Rank | Alpha
| Possible Meanings | Rank |
|---|
| Pathology Residents In-Service Examination | ** |
| proton relaxation-induced spectral editing | ** |
| Pressure Ridge Ice Scour Experiment | ** |
| Programme for Reform in Secondary Education | ** |
| Policy Research Initiatives in Science Education | ** |
| Prototype Indexing and Search Engines | * |
| Pipeline and Riser Safety Evaluation | * |