| AO | abdominal aorta; achievement orientation; acid output; acridine orange; ankle orthosis; anodal openi... |
|---|---|
| AOV, AoV | aortic valve |
| ASAH | antibiotic sterilized aortic valve homograft |
| ASV | anodic stripping voltammetry; antisiphon valve; antisnake venom; avian sarcoma virus |
| AUV | anterior urethral valve |