| RM | radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference materi... |
|---|---|
| AEI | arbitrary evolution index; atrial emptying index |
| arb | arbitrary unit |
| AU | according to custom [Lat. ad usum]; allergenic unit; ngstrom unit; antitoxin unit; arbitrary unit; A... |
| EOM | end of message; equal ocular movement; external otitis media; extraocular movement; extraocular musc... |