| Abbreviation | Definition |
|---|---|
| ASCD | Augmented Secondary Circuit Duct |
| ASCVD | Arteriosclerotic cardiovascular disease |
| ASCVD | Atherosclerotic Coronary Artery Disease |
| ASD | Academic Skills Disorder |
| ASD | Advanced Senility Disease |
| ASD | Anterior Segment Dysgenesis |
| ASD | Atrial Septal Defect |
| ASD | Autism Spectrum Disorder |
| ASD | Autistic Spectrum Disorder |
| ASDS | Asperger Syndrome Diagnostic Scale |
| ASH | Abnormality of Skin and Hair |
| ASH | Asymmetrical Septal Hypertrophy |
| ASHD | ArterioSclerotic Heart Disease |
| ASI | Addiction Severity Index |
| ASI | Adrenal Stress Index |
| ASIS | Anterior Superior Iliac Spine |
| ASMR | Autonomous Sensory Meridian Response |
| ASO | Anti Streptolysin O |
| ASO | Arteriosclerosis Obliterans |
| ASP | Affected Sibling Pair |