| ALAO | angiographic area of left anterior oblique projection |
|---|---|
| AMA | against medical advice; alkaline membrane assay; American Management Association; American Medical A... |
| Ao | orifice area |
| AOC | abridged ocular chart; amyloxycarbonyl; anodal opening contraction; area of concern |
| AP | accessory pathway; accounts payable; acid phosphatase; acinar parenchyma; action potential; active p... |