| PPI | partial permanent impairment; patient package insert; present pain intensity; purified porcine insul... |
|---|---|
| PPN | partial parenteral nutrition; pedunculopontine nucleus |
| PPT | parietal pleural tissue; partial prothrombin time; peak-to-peak threshold; Pfeiffer-Palm-Teller [syn... |
| PRD | partial reaction of degeneration; physician relations department; postradiation dysplasia |
| PRF | partial reinforcement; patient report form; perforin; plasma recognition factor; pontine reticular f... |