| PP | diphosphate group; emphysema [pink puffers]; near point of accommodation [Lat. punctum proximum]; pa... |
|---|---|
| OAP | Office of Adolescent Pregnancy; old age pension, old age pensioner; ophthalmic artery pressure; oste... |
| CAA | carotid audiofrequency analysis; cerebral amyloid angiopathy; circulating anodic antigen; Clean Air ... |
| CCA | cephalin cholesterol antigen; chick cell agglutination; chimpanzee coryza agent; choriocarcinoma; ci... |
| CHD | Chediak-Higashi disease; childhood disease; chronic hemodialysis; congenital or congestive heart dis... |