Medical Abbreviations and Acronyms
- RIResperatory Illness, Infection
- RIResponse Index
- RIResponse Interval
- RIResponse International
- RIRetroactive Interference
- RIRetroactive Inhibition
- RIRetrograde Index
- RIRetrograde Intrabiliary
- RIRetroinsular Area
- RIRetroinsular Cortex
- RIRhesus Isoimmunisation
- RIRituhie Index
- RIRna Index
- RIRnase Inhikitor
- RIRogosin Institute
- RIRoutinc Immunization
- RIRoutine Immunisation
- RIRush Immunotherapy
- RIResponsiveness Index
- RIRespiratory Infection
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