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F
2or f
[ ef ]
noun
, plural F's or Fs, f's or fs.
- the sixth letter of the English alphabet, a consonant.
- any spoken sound represented by the letter F or f, as in fat, differ, or huff.
- something having the shape of an F .
- a written or printed representation of the letter F or f.
- a device, as a printer's type, for reproducing the letter F or f.
f.
3abbreviation for
- (in prescriptions) make.
f
4Symbol.
- Optics. focal length ( def 1 ).
- Mathematics. function (of). See function ( def 4d ).
F
5abbreviation for
- Genetics. filial ( def 3 ).
- firm.
- franc; francs.
f.
6abbreviation for
- (in prescriptions) let them be made.
F
7Symbol.
- the sixth in order or in a series.
- (sometimes lowercase) (in some grading systems) a grade or mark that indicates academic work of the lowest quality; failure.
- Music.
- the fourth tone in the scale of C major or the sixth tone in the relative minor scale, A minor.
- a string, key, or pipe tuned to this tone.
- a written or printed note representing this tone.
- (in the fixed system of solmization) the fourth tone of the scale of C major, called fa.
- the tonality having F as the tonic note.
- (sometimes lowercase) the medieval Roman numeral for 40. Compare Roman numerals.
- Mathematics.
- function (of). See function ( def 4d ).
- (sometimes lowercase) Electricity. farad ( def ).
- Chemistry. fluorine ( ).
- (sometimes lowercase) Physics.
- Biochemistry. phenylalanine ( def ).
f.
8abbreviation for
- (in prescriptions) let it be made; let there be made.
f.
9abbreviation for
- (in the Netherlands) guilder; guilders.
f.
10abbreviation for
- farad.
- farthing.
- father.
- fathom.
- feet.
- female.
- feminine.
- filly.
- fine.
- fluid (ounce).
- folio.
- following.
- foot.
- form.
- formed of.
- franc.
- from.
- Mathematics. function (of ).
f/
11or f: or f/
abbreviation for
, Photography.
F-
12abbreviation for
, Military.
- (in designations of aircraft) fighter:
F-105.
F.
13abbreviation for
- Fahrenheit.
- February.
- Fellow.
- forint.
- franc; francs.
- France.
- French.
- Friday.
f
1/ ɛf /
noun
- the sixth letter and fourth consonant of the modern English alphabet
- a speech sound represented by this letter, usually a voiceless labio-dental fricative, as in fat
F
2symbol for
- music
- a note having a frequency of 349.23 hertz ( F above middle C ) or this value multiplied or divided by any power of 2; the fourth note of the scale of C major
- a key, string, or pipe producing this note
- the major or minor key having this note as its tonic
- Fahrenheit
- Fellow
- chem fluorine
- Helmholtz function
- physics force
- franc(s)
- farad(s)
- genetics a generation of filial offspring, F 1 being the first generation of offspring, F 2 being the second generation, etc
abbreviation for
- France (international car registration)
F-
3abbreviation for
- fighter
F-106
f
4symbol for
- music forte: an instruction to play loudly
- physics frequency
- (formerly in the Netherlands) guilder
- maths function (of)
- physics femto-
- chess See algebraic notation
f.
5abbreviation for
- fathom(s)
- female
- grammar feminine
- ff.FF. folio
- ff. following (page)
f
6symbol for
- f-number
Discover More
Word History and Origins
Origin of f1
From the Latin word fac
Origin of f2
From the Latin word f īant
Origin of f3
From the Latin word fiat
Origin of f4
From the Dutch word florin
Discover More
Word History and Origins
Origin of f1
(sense 3) from Dutch: florin
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