| ANOCL | anodal opening clonus |
|---|---|
| AOC | abridged ocular chart; amyloxycarbonyl; anodal opening contraction; area of concern |
| AOCl | anodal opening clonus |
| AOO | anodal opening odor; atrial asynchronous (competitive, fixed-rate) [pacemaker] |
| AOP | anodal opening picture; aortic pressure |