| A&D | admission and discharge; ascending and descending |
|---|---|
| ADA | adenosine deaminase; American Dental Association; American Dermatological Association; American Diab... |
| DA | dark adaptation; dark agouti [rat]; daunomycin; degenerative arthritis; delayed action; Dental Assis... |
| DAo | descending aorta |
| desc | descendant; descending |