| ACID | Arithmetic, Coding, Information, and Digit Span; automatic implantable cardioverter defibrillator |
|---|---|
| ACTA | American Cardiology Technologists Association; automatic computerized transverse axial [scanning] |
| ADP | adenopathy; adenosine diphosphate; administrative psychiatry; approved drug product; area diastolic ... |
| AED | antiepileptic drug; antihidrotic ectodermal dysplasia; automatic external defibrillator |
| AGC | absolute granulocyte count; automatic gain control |