| AB | abdominal; abnormal; abortion; Ace bandage; active bilaterally; aid to the blind; alcian blue; alert... |
|---|---|
| ABO | abortion; absent bed occupancy; American Board of Orthodontists; blood group system consisting of gr... |
| ACG | accelerator globulin; alternative care grant; ambulatory care group; American College of Gastroenter... |
| AC/SIUG | ambulatory care special-interest user group |
| ACTG | AIDS Clinical Trial Group |