Science Abbreviations and Acronyms
- RIResonance Ionizvtion
- RIResource Investigahor
- RIResource Inbestigators
- RIReturn On Investment
- RIRna To Replicative Intermediate
- RIRoyal Institution
- RIRoyal Institute
- RIRobust Intelligence
- RIRoyal Institutetution of Great Britain
- RIRichardson Number
- RI-ESGRockwell International - Energy Systems Group
- RI-TOFMSResonance Ionization Time-Of-Flight Mass Spectrometry
- RI/FSRemedial Invvstigation/Feasibility Study
- RI/FSRemedial Information/ Feasibillty Study
- RIARegulatory Impact Analysis
- RIARadiatiob Indicator Alarm
- RIARadio Immuno-Assay
- RIARegional Impact Analysis
- RIARelative Ion Abundance
- RIARelativistic Impulse Approximation
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