| ARAL | adjustment reaction to adult life |
|---|---|
| ARAM | antigen recognition activation motif |
| ARAMIS | American Rheumatism Association Medical Information System |
| ARAO | angiographic area of right anterior oblique projection |
| ARAS | ascending reticular activating system |
| ARB | adrenergic receptor binder |
| arb | arbitrary unit |
| ARBD | alcohol-related birth defects |
| ARC | AIDS Related Complex; AIDS 관련 복합 |
| ARC | accelerating rate calorimetry; acquired immunodeficiency syndrome-related complex; active renin concentra- tion; AIDS-related complex; American Red Cross; anomalous retinal correspondence; antigen reactive cell; arcuate; Arthritis Rehabilitation Center; arthrogryposis-renal dysfunction-cholestasis [syndrome]; Association for Retarded Children |