| red | reduction |
|---|---|
| RM | radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference materi... |
| RMS | rectal morphine sulfate [suppository]; red man syndrome; repetitive motion syndrome; respiratory mus... |
| RN | radionuclide; red nucleus; Registered Nurse; registry number; residual nitrogen; reticular nucleus |
| RPPR | red cell precursor production rate |