| RaONC | radiation oncology |
|---|---|
| RATx | radiation therapy |
| RB | radiation burn; rating board; rebreathing; reticulate body; retinoblastoma; right bronchus; right bu... |
| REA | radiation emergency area; radioenzymatic assay; renal anastomosis; right ear advantage |
| RED | radiation experience data; rapid erythrocyte degeneration |