| Rf | respiratory frequency; rutherfordium |
|---|---|
| RFT | respiratory function test; rod-and-frame test; right frontotransverse [fetal position] |
| RICU | respiratory intensive care unit |
| RIP | radioimmunoprecipitation; reflex inhibiting pattern; respiratory inductance plethysmography |
| RM | radical mastectomy; random migration; radon monitor; range of movement; red marrow; reference materi... |