| ATB | at the time of the bomb [A-bomb in Japan]; atrial tachycardia with block |
|---|---|
| ABCC | Atomic Bomb Casualty Commission |
| AW | able to work; above waist; abrupt withdrawal; alcohol withdrawal; alveolar wall; anterior wall; atom... |
| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
| AAS | Aarskog-Scott [syndrome]; acid aspiration syndrome; alcoholic abstinence syndrome; American Academy ... |