"IFR" meaning in English

See IFR in All languages combined, or Wiktionary

Proper name

Head templates: {{en-proper noun}} IFR
  1. (nuclear physics, engineering) Initialism of Integral Fast Reactor. Tags: abbreviation, alt-of, initialism Alternative form of: Integral Fast Reactor
    Sense id: en-IFR-en-name-YyKw9G3C Categories (other): Engineering, Nuclear physics Topics: engineering, natural-sciences, physical-sciences

Noun

Head templates: {{head|en|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. Wikidata QID: Q847919 Tags: abbreviation, alt-of, initialism Alternative form of: instrument flight rules (extra: a set of rules for a pilot flying on instruments, primarily as a means of navigating through inclement weather) Coordinate_terms: VFR, SVFR
    Sense id: en-IFR-en-noun-en:Q847919 Categories (other): Aviation Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences
  2. (aviation, humorous) Initialism of I follow roads, to navigate simply via prominent ground features; this may be at very low level when flight would only normally be possible under Instrument Flight Rules. Tags: abbreviation, alt-of, humorous, initialism Alternative form of: I follow roads (extra: this may be at very low level when flight would only normally be possible under Instrument Flight Rules), to navigate simply via prominent ground features (extra: this may be at very low level when flight would only normally be possible under Instrument Flight Rules)
    Sense id: en-IFR-en-noun-BHwL-mtr Categories (other): Aviation Topics: aeronautics, aerospace, aviation, business, engineering, natural-sciences, physical-sciences
  3. (epidemiology) Initialism of infection fatality rate. Wikidata QID: Q101404269 Tags: abbreviation, alt-of, initialism Alternative form of: infection fatality rate Coordinate_terms: CFR, MR
    Sense id: en-IFR-en-noun-en:Q101404269 Categories (other): Epidemiology, English entries with incorrect language header, Pages with 1 entry, Pages with entries Disambiguation of English entries with incorrect language header: 25 29 10 36 Disambiguation of Pages with 1 entry: 15 31 9 45 Disambiguation of Pages with entries: 22 28 9 41 Topics: epidemiology, medicine, sciences
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Download raw JSONL data for IFR meaning in English (4.9kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2026-05-31 from the enwiktionary dump dated 2026-05-01 using wiktextract (702fa29 and 7f4db16). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.