f

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abbreviation

Photography. f-number.

Music. forte².

QUIZ

CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?

There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?

Question 1 of 7

Which sentence is correct?

His boss, whom he admires, is waiting to meet with him about the big project.

His boss, who he admires, is waiting to meet with him about the big project.

TAKE THE QUIZ TO FIND OUT

Other definitions for f (2 of 13)

f²

Symbol.

Optics. focal length (def. 1).

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

Other definitions for f (3 of 13)

F¹

or f

[ ef ]

/ ɛf /

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.

Other definitions for f (4 of 13)

F²

abbreviation

female (def. 7).

Genetics. filial (def. 3).

firm.

franc; francs.

French¹ (def. 3).

Other definitions for f (5 of 13)

F³

Symbol.

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.

Fahrenheit (def. 2).

Mathematics.

field (def. 15).
function (of). See function (def. 4d).

(sometimes lowercase)Electricity. farad.

Chemistry. fluorine.

(sometimes lowercase)Physics.

Biochemistry. phenylalanine.

Other definitions for f (6 of 13)

F-

abbreviation Military.

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

Other definitions for f (7 of 13)

or f/ or f:

abbreviation Photography.

f-number.

Other definitions for f (8 of 13)

f.¹

abbreviation

(in prescriptions) make.

Origin of f.

From the Latin word fac

Other definitions for f (9 of 13)

f.²

abbreviation

(in prescriptions) let them be made.

Origin of f.

From the Latin word fīant

Other definitions for f (10 of 13)

f.³

abbreviation

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

Origin of f.

From the Latin word fiat

Other definitions for f (11 of 13)

f.⁴

abbreviation

(in the Netherlands) guilder; guilders.

Origin of f.

⁴

From the Dutch word florin

Other definitions for f (12 of 13)

f.⁵

abbreviation

farad.

farthing.

father.

fathom.

feet.

female.

feminine.

filly.

fine.

fluid (ounce).

folio.

following.

foot.

form.

formed of.

franc.

from.

Mathematics. function (of).

Other definitions for f (13 of 13)

abbreviation

Fahrenheit.

February.

Fellow.

forint.

franc; francs.

France.

French.

Friday.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use f in a sentence

The program has not made a final selection on which upgrades will actually be included in future versions of the F-35.
Pentagon Misfires in Stealth Jet Scandal|Dave Majumdar|January 8, 2015|DAILY BEAST
That article noted that the F-35 does not currently have the ability to down-link live video to ground troops,.
Pentagon Misfires in Stealth Jet Scandal|Dave Majumdar|January 8, 2015|DAILY BEAST
In fact, according to F-35 program sources, the next software upgrades are not yet fully defined nor are they fully funded.
Pentagon Misfires in Stealth Jet Scandal|Dave Majumdar|January 8, 2015|DAILY BEAST
Therefore, it is not possible for any F-35 schedule to include a video data link or infrared pointer at this point.
Pentagon Misfires in Stealth Jet Scandal|Dave Majumdar|January 8, 2015|DAILY BEAST

But the last national figure to wield ancient personal authority in an explicitly religious way was Robert F. Kennedy.
No Gods, No Cops, No Masters|James Poulos|January 1, 2015|DAILY BEAST
E was an Esquire, with pride on his brow; F was a Farmer, and followed the plough.
Boys and Girls Bookshelf; a Practical Plan of Character Building, Volume I (of 17)|Various
I follow F. mainly, and note all but very trifling variations from it.
Chaucer's Works, Volume 1 (of 7) -- Romaunt of the Rose; Minor Poems|Geoffrey Chaucer
I played up one octave, and then I wished to go on by placing my first finger on F sharp.
Music-Study in Germany|Amy Fay
The unindustrious pupil imagines that “p” represents 8, and not “f” or “v,” and translates 1845 into “To pour oil” .
Assimilative Memory|Marcus Dwight Larrowe (AKA Prof. A. Loisette)
The box of the diplomatic corps was just opposite us, and our gay little Mrs. F. sat in it dressed in white satin.
Music-Study in Germany|Amy Fay

British Dictionary definitions for f (1 of 6)

F

/ (ɛf) /

noun plural f's, F's or Fs

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

British Dictionary definitions for f (2 of 6)

symbol for

music forte: an instruction to play loudly

physics frequency

(formerly in the Netherlands) guilder

maths function (of)

physics femto-

chess See algebraic notation

Word Origin for f

(sense 3) from Dutch: florin

British Dictionary definitions for f (3 of 6)

f/ or f:

symbol for

f-number

British Dictionary definitions for f (4 of 6)

symbol 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)

British Dictionary definitions for f (5 of 6)

F-

abbreviation for

fighterF-106

British Dictionary definitions for f (6 of 6)

F.

abbreviation for

fathom(s)

female

grammar feminine

plural ff. or FF. folio

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

Abbreviation of Fahrenheit

The symbol for farad.

The symbol for fluorine.