| Abbreviation | Definition |
|---|---|
| ABS | American Board of Surgery |
| ABS | Associated Biomedical Systems, Inc. |
| ABT | Anti-Biotic Therapy |
| ABUTH | Ahmadu Bello University Teaching Hospital |
| ABW | Adjusted body weight |
| ABX | AntiBiotics |
| AC | After Class |
| AC | Air Conditioning |
| AC | Alternative Care |
| ACAD | Ambulatory Care And Diagnosis |
| ACBT | Active Cycle of Breathing Technique |
| ACC | Anterior Cingulate Cortex |
| ACC | Anti-Coagulation Clinic |
| ACCI | Addenbrookes Centre For Clinical Investigation |
| ACDS | Apprenticeship for Child Development Specialists |
| ACDS | Australian Centre for Diabetes Strategy |
| ACE | Adverse Childhood Experiences |
| ACE | Alzheimer's Care and Enrichment |
| ACEP | Arizona Comprehensive Epilepsy Program |
| ACES | Autoimmune Care, Entertainment, and Support |