| Abbreviation | Definition |
|---|---|
| PPI | preproinsulin |
| PPI | protein-protein interaction |
| PPI | purified porcine insulin |
| PPIF | patient and public involvement forum (Local Involvement Network) |
| PPR | paired pulse ratio |
| PPR | papulopustular rosacea |
| PPR | parapyramidal region |
| PPR | patient-provider relationship |
| PPR | Pharmaceutical Price Regulation |
| PPR | Physician Payment Reform |
| PPR | progressive pigmentary retinopathy |
| PPR | proximal promoter region |
| PPR | PTHrP receptor |
| PPRD | programme for provisionally registered doctors |
| PPRD | This term got 56 hits on 23.10.2011, and thus unlikely to be in current use |
| PPRS | Pharmaceutical Prices Regulation Scheme |
| PPS | parapharyngeal space |
| PPS | Parliamentary Private Secretary (!) |
| PPS | pepsin A |
| PPS | peripheral pulmonary stenosis |