IFR

English

Proper noun

IFR

1. (nuclear physics, engineering) Initialism of Integral Fast Reactor.

Noun

IFR

1. (aviation, pilot training) Initialism of instrument flight rules, a set of rules for a pilot flying on instruments, primarily as a means of navigating through inclement weather.
2. (epidemiology) Initialism of infection fatality rate.
   • For quotations using this term, see Citations:IFR.

Coordinate terms

(aviation):

• SVFR
• VFR

See also

• CFR

Anagrams

• FIR, Fri, IRF, RFI, RIF, Rif, fir, rif