| PPD | packs per day; paraphenylenediamine; percussion and postural drainage; permanent partial disability;... |
|---|---|
| PAR | participating provider; passive avoidance reaction; perennial allergic rhinitis; photosynthetically ... |
| VASC | Verbal Auditory Screen for Children; visual-auditory screening |
| bcr | breakpoint cluster region |
| NOR | Nucleolar Organizing Region |