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:

• Serial Infrared
• Solitaire file Bitmap graphics
• System Internal Resource
• Sustained Information Rate
• Surface Insulation Resistance
• Shuttle Imaging Radar
• Science Information Robot
• Sexy Intelligent Racer
• Sorry I'm Retarded
• System Intermediate Representation
• Silent Information Regulator
• Soil Insect Rating
• Standard Information Retrieval
• String Instrument Repair
• Sort Interval Recursive

SIR is also in:

• Adults
• Drivers
• Electronics
• File Extensions
• General
• Ocean Science
• Unfiled
• Universities