| Abbreviation | Definition |
|---|---|
| ARSH | Association of Royal Society of Health |
| ART | Achilles reflex test |
| ART | acoustic reflex threshold |
| ART | analysis-reporting tool |
| ART | androgen replacement therapy |
| ART | antiretroviral therapy |
| ART | artificial reproduction technique |
| ART | assisted reproduction technique |
| ART | atraumatic restorative technique |
| ART | atrial reentrant tachycardia |
| ARVAC | Association for Research in the Voluntary and Community Sector |
| AS | accessory spleen |
| AS | acoustic schwannoma |
| AS | anionic surfactant |
| AS | anovulatory syndrome |
| AS | anterior scalene |
| AS | anteroseptal |
| AS | antisense |
| AS | antiserum |
| AS | asbestos |