| ACO | acute coronary occlusion; alert, cooperative, and oriented; anodal closure odor |
|---|---|
| AOO | anodal opening odor; atrial asynchronous (competitive, fixed-rate) [pacemaker] |
| BO | Bachelor of Osteopathy; base of prism out; behavior objective; belladonna and opium; body odor; bowe... |
| MIO | minimum identifiable odor; modular input/output |
| MPO | maximum power output; minimal perceptible odor; myeloperoxidase |