| ABD | abdomen; aged, blind, and disabled; aggressive behavioral disturbance; average body dose | 
|---|---|
| ABM | adjusted body mass; alveolar basement membrane; autologous bone marrow | 
| ABW | average body weight | 
| AIE | acute inclusion-body encephalitis; acute infectious encephalitis; acute infective endocarditis | 
| APBD | adult polyglucosan body disease |