| AAR | active avoidance reaction; acute articular rheumatism; antigen-antiglobulin reaction |
|---|---|
| AASP | acute atrophic spinal paralysis; American Association of Senior Physicians; ascending aorta synchron... |
| AAU | acute anterior uveitis |
| ABPE | acute bovine pulmonary edema |
| ABS | abdominal surgery; acute brain syndrome; Adaptive Behavior Scale; admitting blood sugar; adult bovin... |