Main definitions of f in English

: f1F2F3

f1

  • 1Farad.

  • 2Farthing.

  • 3Father.

  • 4Fathom.

  • 5Feet.

  • 6Grammar
    Feminine.

  • 7Female.

  • 8in combination (in units of measurement) femto- (10¹⁵).

  • 9Filly.

  • 10Fine.

  • 11(in textual references) folio.

  • 12Foot.

  • 13Form.

  • 14Music
    Forte.

  • 15(in racing results) furlong(s).

  • 16Franc.

  • 17From.

  • 18Chemistry
    Denoting electrons and orbitals possessing three units of angular momentum.

    ‘f-orbitals’

  • 1Focal length.

    ‘apertures of f/5.6 to f/11’
    See also f-number
  • 2Mathematics
    A function of a specified variable.

    ‘the value of f(x)’
  • 3Electronics
    Frequency.

Pronunciation

f

/ef//ɛf/

Main definitions of f in English

: f1F2F3

F2

  • 1Fahrenheit.

    ‘60°F’
  • 2Farad(s).

  • 3"F"Chemistry
    Faraday(s).

  • 4(in racing results) favorite.

  • 5Female.

  • 6Fighter (in designations of US aircraft types)

    ‘the F117 Stealth fighter’
  • 7(in auto racing) formula.

    ‘an F1 driver’
  • 8Franc(s).

  • 9Failure.

  • 10False.

  • 11February.

  • 12Fellow.

  • 13Forint.

  • 14France.

  • 15French.

  • 1The chemical element fluorine.

  • 2Physics
    Force.

    ‘F = ma’

Pronunciation

F

/ɛf//ef/

Main definitions of f in English

: f1F2F3

F3

(also f)

noun

  • 1The sixth letter of the alphabet.

    1. 1.1 Denoting the next after E in a set of items, categories, etc.
    2. 1.2 The sixth highest or lowest class of academic marks (also used to represent “Fail”).
      • ‘Moreover, not only Fs but also Ds are frowned on, and grades are regularly inflated to achieve C averages.’
      • ‘In the schools I went to, when you get that many Fs, you flunk out.’
    3. 1.3"f"Chess Denoting the sixth file from the left, as viewed from White's side of the board.
      • ‘I don't like black's vulnerable f file or e5 pawn however.’
      • ‘Black has no way to oppose the Rooks on the f-file.’
  • 2usually "F"Music
    The fourth note of the diatonic scale of C major.

    1. 2.1 A key based on a scale with F as its keynote.
      • ‘The key of F is found most commonly in folk-oriented music.’

Pronunciation

F

/ef//ɛf/