411 REFERENCE · Wiktionary
IRF
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
Noun
en physics en inertial reference frame.
Proper noun
en US _ military en w:Immediate Response Force.
en ringette en International Ringette Federation.
Anagrams
en fir FIR Fri IFR RFI RIF Rif fir rif