| Abbreviation | Definition |
|---|---|
| ACG | aortocoronary graft |
| ACGT | Advisory Committee on Genetic Testing |
| ACH | achalasia |
| ACH | achondroplasia |
| ACH | ACTH, adrenocorticotropic hormone |
| ACH | active chronic hepatitis |
| ACH | acute cholecystitis |
| ACH | allergic contact hypersensitivity |
| ACHC | Association of Community Health Councils |
| ACHCEW | Association of Community Health Councils in England & Wales (obsolete) |
| ACHMS | Asian Community Mental Health Services |
| AChR | acetylcholine receptor |
| ACIE | Association of Charity Independent Examiners |
| ACIG | Academy of Medical Royal Colleges Information Group |
| ACIP | Asymptomatic Cardiac Ischemia Pilot study |
| ACIT | Asymptomatic Cardiac Ischemia Trial |
| ACIT | Google negative, 2/6/04 |
| ACL | Allen cognitive levels test Psychology |
| ACL | alternative concentration limits Environment |
| ACL | aminocaprolactam |