| Abbreviation | Definition |
|---|---|
| AAPS | Association of American Physicians and Surgeons |
| AAR | Aortic Aneurysm Repair |
| AAROM | Active Assistive Range Of Motion |
| AAS | Alive And Smiling |
| AAS | Anabolic And Androgenic Steroids |
| AAS | Anabolic Androgenic Steriod |
| AAS | Anabolic Androgenic Steroid |
| AAS | Anabolic Androgenic Steroids |
| AASD | Anti-depressant Associated Sexual Dysfunction |
| AAT | Activities As Tolerated |
| AAT | Animal- Assisted Therapy |
| AATD | Alpha Anti Trypsin Deficiency |
| AATP | Acquired Amegakaryocytic Thrombocytopenic Purpura |
| AATS | Animal- Assisted Therapy Services |
| AAV | Adeno Associated Virus |
| AAVC | Apico Aortic Valved Conduit |
| AB | ABdomen |
| AB | Abnormal |
| AB | Abortion |
| AB | Adaptive Behavior |