| AAS |
Aarskog-Scott [syndrome]; acid aspiration syndrome; alcoholic abstinence syndrome; American Academy of Sanitarians; American Analgesia Society; aneurysm of atrial septum; anthrax antiserum; aortic arch syndrome; atomic absorption spectrophotometry |
| AASD |
American Academy of Stress Disorders |
| AASH |
adrenal androgen stimulating hormone; American Association for the Study of Headache |
| AASK |
African American Study of Kidney Diseases and Hypertension Pilot Study |
| AASP |
acute atrophic spinal paralysis; American Association of Senior Physicians; ascending aorta synchronized pulsation |
| AASS |
American Association for Social Security |
