| ABC | absolute basophil count; absolute bone conduction; acalculous biliary colic; acid balance control; a... |
|---|---|
| ACD | absolute cardiac dullness; absolute claudication distance; acid-citrate-dextrose [solution]; actinom... |
| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
| AA/AD | alcohol abuse/alcohol dependence |
| ABR | Absolute Bed Rest |