| REM | rapid eye movement; recent-event memory; reticular erythematous mucinosis; return electrode monitor;... |
|---|---|
| RET | reticular; reticulocyte; retina; retention; retained; right esotropia |
| RF | radial fiber; radio frequency; receptive field; regurgitant fraction; Reitland-Franklin [unit]; rela... |
| RL | radial line; radiation laboratory; reduction level; renal dysplasia-limb defects [syndrome]; resisti... |
| RMC | reticular magnocellular [nucleus]; right middle cerebral [artery] |