| AA | abdominal aorta; acetic acid; achievement age; active alcoholic; active assistive [range of motion];... |
|---|---|
| AACSH | adrenal androgen corticotropic stimulating hormone |
| AASH | adrenal androgen stimulating hormone; American Association for the Study of Headache |
| Ad | adenovirus; adrenal; anisotropic disk |
| AdM | adrenal medulla |