Main meanings of f in English

: f1F2F3


Translate f into Spanish


  • 1Grammar

  • 2in combination (in units of measurement) femto- (10⁻¹⁵)

    • ‘the detection limits of the enzymatic activity tests are between 10 and 500 fg per test’
  • 3(in textual references) folio.

  • 4Music

  • 5(in racing results) furlong(s)

    • ‘2 m 3 f’
  • 6Chemistry
    Denoting electrons and orbitals possessing three units of angular momentum.

    • ‘f-orbitals’

  • 1Focal length.

    See also f-number

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

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

Main meanings of F in English

: f1F2F3


(also f)

Pronunciation /ɛf/

Translate F into Spanish

nounFs, F's

  • 1The sixth letter of the alphabet.

    1. 1.1Denoting the next after E in a set of items, categories, etc.
    2. 1.2The sixth highest or lowest class of academic marks (also used to represent ‘Fail’)
      ‘they are guaranteed F's if they goof around’
      • ‘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. 1.3fChess Denoting the sixth file from the left, as viewed from White's side of the board.
      ‘Black has no way to oppose the Rooks on the f-file.’
      • ‘I don't like black's vulnerable f file or e5 pawn however.’
  • 2usually FMusic
    The fourth note of the diatonic scale of C major.

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

Main meanings of F in English

: f1F2F3


Pronunciation /ɛf/

Translate F into Spanish


  • 1Fahrenheit.

    • ‘60°F’
  • 2Farad(s).

  • 3FChemistry

  • 4(in racing results) favourite.

    • ‘2nd Miss Prism 2–1 F’
  • 5Female.

  • 6Fighter (in designations of US aircraft types)

    • ‘the F117 Stealth fighter’
  • 7Biology
    Filial generation.

  • 8British Fine (used in describing grades of pencil lead)

    • ‘an F pencil’
  • 9(in motor racing) formula.

    • ‘an F1 driver’
  • 10Franc(s)

    • ‘$1.00 = F5.9645 as at April 29’
  • 11France (international vehicle registration).

  • 12(in tables of sports results) goals or points for.

  • 1The chemical element fluorine.

  • 2Physics

    • ‘F=ma’