What does RSI stand for?

Air Sunshine, Inc. - ICAO designator (FAAC)

East-West Resource Systems Institute - Research center (RCD)

Institute for Regulatory Science - A non-profit scientific and educational organization (WIPP)

Radarsat International (SAUS)

RADAR Scope Interpretation (AAG)

Radarscope Interpretation (SAUS)

Radar Sensitivity Improvement (ACAE)

Radial-Shear Interferometer (SAUS)

Radiation Sciences Inc. (SAUS)

Radiation Shielding Information Data Base - Oak Ridge National Laboratory - Department of Energy - Information service or system (CRD)

Radiation Systems, Inc. (EFIS)

Railway Supply Institute (EA)

Rainbow Satellite, Incorporated (ACAE)

Ramsoft Systems, Inc. - Commercial firm

Rapid Sequence Induction anesthesia (SAUS)

Rationalization, Standardization, and Integration - or Interoperability - Program - Army

Rationalization, Standardization, and Inter-operability - Military technology (DDF)

Reaction Search International - Commercial firm

Reactor Services International, Inc. (EFIS)

Reactor Siting Index (NRCH)

Realty South Investment (EFIS)

Receipt, Storage, and Issue - Army (AABC)

Record Status Indicator - Military (AABC)

Reflected Signal Indication - Air Force

Refractory Reusable Surface Insulation (PDAA)

Regimental Signal Instructor (SAUS)

Regional Safety Inspector - Ministry of Agriculture, Fisheries, and Food - British

Register Sender Inward - Telecommunications (TEL)

Relative Strength Index (EXCG)

Relative Strength Indicator (NUMA)

Religious Science International (EA)

Relocation Services Institute - British (DBA)

Relocation Strategies, Inc. - Commercial firm

Remotely Sensed Imagery (GIS)

Remote Sensing Imagery (SAUS)

Remote Sensing Institute - South Dakota State University - Research center (RCD)

Remote Symbiont Interface (SAUS)

Rennellese Sign Language - Language code (ETLW)

Repetitive Strain Injuries (or Injury) (SAUS)

Repetitive Strain Injury

Repetitive Stress Injury

Replacement Stream Input - Military

Reports of the Smithsonian Institution (SAUS)

Repressor-Sensitizer Index - Psychology

Repubblica Sociale Italiana - Italian Socialist Republic - Founded by Mussolini - 1943-1945

Request for Shipping Instructions (SAUS)

Research Studies Institute

Research Systems, Inc. - Commercial firm

Resist - Telegraphy (PCTE)

Resonant Snubber Inverter - Electric vehicle engineering

Retail Soft International (EFIS)

Retirement and Survivors Insurance (SAUS)

Retrieval of Stored Information (SAUS)

Reusable Surface Insulation - NASA

Revenue Systems, Inc.

Ring State Indicator - Telecommunications (IAA)

Rio Sidra - Panama - Airport symbol (OAG)

Ripple Symmetry Index (SAUS)

Robocom Systems International, Inc. - Commercial firm

Roll Stability Indicator - NASA (KSC)

Roll Systems, Inc. (SAUS)

Roofing Solutions, Inc. - Commercial firm

Rotary Shaft Indicator

Rough Sleepers' Initiative - British (WDAA)

Royal Sanitary Institute (ROG)

Royal Signals Institution - British (DEN)

Race Specific Incompatibility