f

1

abbreviation
  1. Photography. f-number.

  1. Music. forte2.

Words Nearby f

Other definitions for f (2 of 13)

f2

Symbol.
  1. Mathematics. function (of). See function (def. 4d).

Other definitions for F (3 of 13)

F1

or f

[ ef ]

noun,plural F's or Fs, f's or fs.
  1. the sixth letter of the English alphabet, a consonant.

  2. any spoken sound represented by the letter F or f, as in fat, differ, or huff.

  1. something having the shape of an F.

  2. a written or printed representation of the letter F or f.

  3. a device, as a printer's type, for reproducing the letter F or f.

Other definitions for F (4 of 13)

F2

abbreviation
  1. firm.

  2. franc; francs.

Other definitions for F (5 of 13)

F3

Symbol.
  1. the sixth in order or in a series.

  2. (sometimes lowercase) (in some grading systems) a grade or mark that indicates academic work of the lowest quality; failure.

  1. 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.

  2. (sometimes lowercase) the medieval Roman numeral for 40.: Compare Roman numerals.

  3. Mathematics.

  4. (sometimes lowercase)Electricity. farad.

  5. Chemistry. fluorine.

  6. (sometimes lowercase)Physics.

  7. Biochemistry. phenylalanine.

Other definitions for F- (6 of 13)

F-

abbreviationMilitary.
  1. (in designations of aircraft) fighter: F-105.

Other definitions for f/ (7 of 13)

f/

abbreviationPhotography.

Other definitions for f. (8 of 13)

f.1

abbreviation
  1. (in prescriptions) make.

Origin of f.

8
From the Latin word fac

Other definitions for f. (9 of 13)

f.2

abbreviation
  1. (in prescriptions) let them be made.

Origin of f.

9
From the Latin word fīant

Other definitions for f. (10 of 13)

f.3

abbreviation
  1. (in prescriptions) let it be made; let there be made.

Origin of f.

10
From the Latin word fiat

Other definitions for f. (11 of 13)

f.4

abbreviation
  1. (in the Netherlands) guilder; guilders.

Origin of f.

11
From the Dutch word florin

Other definitions for f. (12 of 13)

f.5

abbreviation
  1. farad.

  2. farthing.

  1. father.

  2. fathom.

  3. feet.

  4. female.

  5. feminine.

  6. filly.

  7. fine.

  8. fluid (ounce).

  9. folio.

  10. following.

  11. foot.

  12. form.

  13. formed of.

  14. franc.

  15. from.

  16. Mathematics. function (of).

Other definitions for F. (13 of 13)

F.

abbreviation
  1. Fahrenheit.

  2. February.

  1. Fellow.

  2. forint.

  3. franc; francs.

  4. France.

  5. French.

  6. Friday.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use f in a sentence

British Dictionary definitions for f (1 of 6)

f

F

/ (ɛf) /


nounplural f's, F's or Fs
  1. the sixth letter and fourth consonant of the modern English alphabet

  2. a speech sound represented by this letter, usually a voiceless labio-dental fricative, as in fat

British Dictionary definitions for f (2 of 6)

f

symbol for
  1. music forte: an instruction to play loudly

  2. physics frequency

  1. (formerly in the Netherlands) guilder

  2. maths function (of)

  3. physics femto-

Origin of f

2
(sense 3) from Dutch: florin

British Dictionary definitions for f (3 of 6)

f

symbol for
  1. f-number

British Dictionary definitions for F (4 of 6)

F

symbol for
  1. 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

  2. Fahrenheit

  1. Fellow

  2. chem fluorine

  3. Helmholtz function

  4. physics force

  5. franc(s)

  6. farad(s)

  7. genetics a generation of filial offspring, F 1 being the first generation of offspring, F 2 being the second generation, etc

abbreviation for
  1. France (international car registration)

British Dictionary definitions for F- (5 of 6)

F-

abbreviation for
  1. fighter: F-106

British Dictionary definitions for f. (6 of 6)

f.

abbreviation for
  1. fathom(s)

  2. female

  1. grammar feminine

  2. plural ff. or FF. folio

  3. plural ff. following (page)

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for F

F

  1. Abbreviation of Fahrenheit

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.