| RSA | rabbit serum albumin; regular spiking activity; relative specific activity; relative standard accura... |
|---|---|
| RBD | recurrent brief depression; relative biological dose; right border of dullness |
| AD | accident dispensary; acetate dialysis; active disease; acute dermatomyositis; addict, addiction; ade... |
| ADD | acceptable daily dose; adduction; adenosine deaminase; attentional deficit disorder; average daily d... |
| DED | date of expected delivery; defined exposure dose; delayed erythema dose |