| ACD | absolute cardiac dullness; absolute claudication distance; acid-citrate-dextrose [solution]; actinom... |
|---|---|
| AD | accident dispensary; acetate dialysis; active disease; acute dermatomyositis; addict, addiction; ade... |
| IAD | inactivating dose; instructional advance directive; internal absorbed dose |
| AAP | air at atmospheric pressure; American Academy of Pediatrics; American Academy of Pedodontics; Americ... |
| AGPA | American Group Practice Association; American Group Psychotherapy Association |