Fir

FIR may stand for:

Finite Impulse Response, a digital filter property.
far infrared, i.e. infrared radiation of long wave length
In India, First Information Report, the first report of crime filed by police
Flight Information Region, a type of airspace
F.I.R., the Mandarin rock music group
in web design, Fahrner Image Replacement, a method for replacing text with an image using style sheets [link]
Federazione Italiana Rugby, the rugby union governing body in Italy

From Wikipedia, the Free Encyclopedia. Original article here. Support Wikipedia by contributing or donating.
All text is available under the terms of the GNU Free Documentation License See Wikipedia Copyrights for details.