Origin of FLIRf(orward) l(ooking) i(nfra)r(ed)
- (military) Forward Looking Infrared
flir - Computer Definition
(Forward Looking InfraRed) A thermal energy detection technology used in planes, ships, tanks and cars for recognizing distant objects in fog and in the dark. The term was coined to contrast this method with airborne "sideways tracking," which scans the environment below with a row of IR detectors moving like a push broom. See infrared wavelengths.