| AR | absolute risk; accounts receivable; achievement ratio; actinic reticuloid [syndrome]; active resista... |
|---|---|
| AROA | autosomal recessive ocular albinism |
| ARPD | autosomal recessive polycystic disease |
| ARPKD | autosomal recessive polycystic kidney disease |
| ARSACS | autosomal recessive spastic ataxia of Charlevoix-Saguenay |