| ACN | acute conditioned neurosis; Ambulatory Care Network; American College of Neuropsychiatrists; America... |
|---|---|
| ACNP | acute care nurse practitioner; American College of Nuclear Physicians |
| ACO | acute coronary occlusion; alert, cooperative, and oriented; anodal closure odor |
| ACTS | acute cervical traumatic sprain or syndrome; advanced communication technology satellite; American C... |
| ACU | acquired cold urticaria; acute care unit; agar colony-forming unit; ambulatory care unit |