| AC/BC | air conduction/bone conduction [time ratio] |
|---|---|
| AC/SIUG | ambulatory care special-interest user group |
| ACA | Anterior Cerebral Artery |
| ACA | abnormal coronary artery; acrodermatitis chronica atrophicans; acute cerebellar ataxia; adenocarcinoma; adult child of an alcoholic; American Chiropractic Association; American College of Allergists; American College of Anesthesiologists; American College of Angiology; American College of Apothe- caries; American Council on Alcoholism; aminocephalosporanic acid; ammonia, copper, and acetate; amyotrophic choreo-acanthocytosis; anterior cerebral artery; anterior communicating aneurysm [or artery]; anticardiolipin antibody; anticentromere antibody; anticollagen antibody; anticomplement activity; anticytoplasmic antibody; Automatic Clinical Analyzer |
| ACAAI | American College of Allergy, Asthma and Immunology |
| ACAC | acetyl-coenzyme A cocarboxylase; activated charcoal artificial cell |
| ACACN | American Council of Applied Clinical Nutrition |
| ACACT | acyl-coenzyme A:cholesterol acyl transferase |
| ACAD | asymptomatic coronary artery disease |
| Acad | academy |