411 REFERENCE · Wiktionary
FIR
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
fir fir- fír
English
Adjective
-
en signal processing of a filter en w:finite impulse response; that has impulse response (or response to any finite length input) of finite duration.
Noun
~
en aviation en w:flight information region; a specified region of airspace in which a flight information service (FIS) and an alerting service (ALRS) are provided.
en South Asia Singapore policing en w:first information report.
en uncountable en far infrared,far infrared radiation.
Related terms
en flight information region FIS
en infrared VLWIR LWIR MWIR SWIR VSWIR NIR MIR IR FUV (far-UV)
Anagrams
en fir Fri IFR IRF RFI RIF Rif rif