The meaning of the Acronym SIR is...

SIR is

• System Intermediate Representation
• Silent Information Regulator
• Soil Insect Rating
• Standard Information Retrieval
• String Instrument Repair
• Sort Interval Recursive
• Standard Information Robot
• Studio Instrument Rentals
• Simulated Intelligence Robotics
• Selective Internal Radiation
• Super Innocent Racing
• Sport Injected Race
• Similar Inside And Related
• Sorry Im Retarded
• Student Issues Roundtable
• Supplemental Inflatable Restraint
• Self Important Ruler
• Stuck In Reality
• Statement Of Intent To Register
• Supplimental Inflatible Restraint
• Scottish Ice Rink
• Statistical Information Retrieval
• Susceptible Intermediate Resistant

More Meanings For SIR:

• Surface Insulation Resistance
• Shuttle Imaging Radar
• Science Information Robot
• Statistical Inventory Reconciliation
• Scientific Information Retrieval
• Sampling Importance Resampling
• Skill Integrity And Responsibility
• School Improvement Review
• Silencing Information Regulator
• Speed Integrity And Reliability
• Serial Infrared
• Solitaire file Bitmap graphics
• System Internal Resource
• Sustained Information Rate
• Society of Interventional Radiology (formerly SCVIR)

SIR is also in:

• Accounting
• Drivers
• Educational
• Electronics
• FDA
• File Extensions
• General
• Law
• Ocean Science
• Stock Exchange
• Universities