| RLR | right lateral rectus [muscle] |
|---|---|
| RMR | relative maximum respone; resting metabolic rate; right medial rectus [muscle] |
| RMS | rectal morphine sulfate [suppository]; red man syndrome; repetitive motion syndrome; respiratory mus... |
| RSO | radiation safety officer; Resident Surgical Officer; right superior oblique [muscle] |
| RSR | regular sinus rhythm; relative survival rate; right superior rectus [muscle] |