| ORM | orosomucoid; other regulated material; oxygen ratio monitor |
|---|---|
| ORMC | oxygen ratio monitor controller |
| PCM | patient care manager or management; patient classification system; primary cutaneous melanoma; proce... |
| REM | rapid eye movement; recent-event memory; reticular erythematous mucinosis; return electrode monitor;... |
| RM | radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference materi... |