| AC/SIUG | ambulatory care special-interest user group |
|---|---|
| ACU | acquired cold urticaria; acute care unit; agar colony-forming unit; ambulatory care unit |
| ADG | ambulatory diagnostic group; atrial diastolic gallop; axiodistogingival |
| AEM | Academic Emergency Medicine [journal]; analytical electron microscopy; ambulatory electrocardiograph... |
| AHM | Allied health manpower; ambulatory Holter monitor |