| AT3 | antithrombin III |
|---|---|
| ATA | Atmospheres Absolute |
| ATA | Aurine tricarboxylic acid |
| ATA | atmosphere absolute pressure |
| ATase | 06-alkylguanine-DNA-alkyltransferase |
| ATase | Alkyltransferase |
| ATBC | Alpha-Tocopherol Beta-Carotene Cancer Prevention |
| ATBC | acetyl N-tributyl citrate |
| ATBF | Adipose tissue blood flow |
| ATC | Air Traffic Controller |