| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
|---|---|
| PRECEDE | predisposing, reinforcing, and enabling causes in educational diagnosis and evaluation [model] |
| PROC | GLM general linear model procedure |
| PS | pacemaker syndrome; paired stimulation; paradoxical sleep; paraspinal; parasympathetic; Parkinson sy... |
| RA | radioactive; ragocyte; ragweed antigen; rapidly adapting [receptors]; reactive arthritis; reciprocal... |