| refl | reflex |
|---|---|
| RIP | radioimmunoprecipitation; reflex inhibiting pattern; respiratory inductance plethysmography |
| RR | radiation reaction; radiation response; rate ratio; rational recovery [group]; recovery room; relati... |
| RRI | recurrent respiratory infection; reflex relaxation index; relative response index |
| RSD | reflex sympathetic dystrophy; relative standard deviation |