411 REFERENCE · Wiktionary
EF
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
Appendix:Variations of "ef"
Translingual
Symbol
exa farad electrical capacitance
1 ice cap climate
1 2 1 the Unitary patent#1970s and 1980s: proposed Community Patent Convention Union of Countries under the European Community Patent Convention
Usage notes
ISO 3166 1 1 the World Intellectual Property Organization the WIPO ST.3 standard
English
Noun
en medicine cardiology en ejection fraction.
en electricity en electric field.
en LAKETOWN 115-kV TRANSMISSION LINE PROJECT IN CARVER COUNTY, MN https://greatriverenergy.com/wp-content/uploads/2024/08/2024-08-19-GRE-Laketown-Route-Permit-Application.pdf 2024-08-19 55, 74 w:Great River Energy Under certain conditions, the localized EF near an energized transmission line conductor can produce small electric discharges, ionizing nearby air. Modern “bipolar” cardiac devices are much less susceptible to interactions with EFs. Manufacturers of pacemakers and other IMDs have indicated that EFs below 6 kV/m are unlikely to cause interactions affecting the operation of most of their devices. https://web.archive.org/web/20260606173206/https://greatriverenergy.com/wp-content/uploads/2024/08/2024-08-19-GRE-Laketown-Route-Permit-Application.pdf 6 June 2026
Proper noun
en computing Microsoft en w:Entity Framework an open-source ORM framework.
en Canada US meteorology Followed by a number from 0 to 5: en enhanced Fujita 1 a rating on the Enhanced Fujita scale used to indicate the intensity of a tornado; it has superseded the Fujita scale.
en Roman Catholicism en Extraordinary Form.
Adjective
-
en philately en extremely fine or en extra fine; also en XF.
Anagrams
en ef F&E FE Fe f.e.
German
Pronunciation
de /ˈeːʔɛf/
Noun
m,(s),-[formal]:s[colloquial]
de historical military one-year volunteer (abbreviation of Einjährig-Freiwilliger)
Usage notes
The plural often takes no ending in formal standard German. In less formal speech, however, -s is only rarely omitted.
Derived terms
de EFschaft
de EFK
Spanish
Proper noun
es educación física