| AHR | antihyaluronidase reaction; Association for Health Records; atrial heart rate |
|---|---|
| AMLR | autologous mixed lymphocyte reaction |
| ANAP | agglutination negative, absorption positive [reaction] |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| ARAL | adjustment reaction to adult life |