| AAT | Alpha(α)-Anti-Trypsin |
|---|---|
| AAT | Aachen Aphasia Test; academic aptitude test; alanine aminotransferase; alkylating agent therapy; alpha-1-antitrypsin; atrial triggered [pacemaker]; auditory apperception test; automatic atrial tachycardia |
| AATS | American Association for Thoracic Surgery |