The meaning of the Acronym FIR is...

FIR is

• Fairyland In Reality
• Foundation for the Investigation of Reality

More Meanings For FIR:

• Fast Infrared
• File Intermediate Representation
• Far Infra Red
• Far InfraRed
• Finite Impulse Response
• Field Investigation Research
• Far InfraRed
• Feline Interaction Robot
• First Information Report
• Flexible Initiatives Resourcing
• Final Inspection Report
• Fuel Indicating Reading
• Force Information Room
• Flight Information Region
• Fact Information Report

FIR is also in:

• Astronomy
• Colors
• Drivers
• Electronics
• General
• Military
• NASA
• Police
• Transportation
• Universities
• US Government
• Veterinary