| ACI | acceleration index; acoustic comfort index; acute cardiac ischemia; acute coronary infarction; acute coronary insufficiency; adenylate cyclase inhibitor; adrenocortical insufficiency; anticlonus index |
|---|---|
| ACI-TIPI | acute cardiac ischemia-time insensitive predictive instrument |
| ACID | Arithmetic, Coding, Information, and Digit Span; automatic implantable cardioverter defibrillator |
| Acid. | Acidosis |
| ACIF | anticomplement immunofluorescence |
| ACIP | acute canine idiopathic polyneuropathy; Advisory Committee on Immunization Practices [CDC] |
| ACIR | Automotive Crash Injury Research |