| Abbreviation | Definition |
|---|---|
| ACR | albumin/creatinine ratio |
| ACR | American College of Rheumatism |
| ACR | Association Canadienne des Radiologistes |
| ACR | Association for Conflict Resolution |
| ACRA | acetylcholine receptor antibody |
| ACRA | Advisory Committee on Resource Allocation (obsolete, UK Department of Health) |
| ACRE | Advisory Committee on Releases to the Environment Public health |
| ACRE | Appropriateness of Coronary REvascularization Cardiology |
| ACRP | Association of Clinical Research Professionals, formerly Associates in Clinical Pharmacology |
| ACS | abdominal compartment syndrome |
| ACS | absorbable collagen sponge |
| ACS | acetyl CoA synthase |
| ACS | acrocephalosyndactyly |
| ACS | acute chest syndrome |
| ACS | acute compartment syndrome |
| ACS | acute confusional state |
| ACS | adenoma-carcinoma sequence |
| ACS | ambulatory care service |
| ACS | antireticular cytotoxic serum |
| ACS | aortocaval shunt |