f

1 of 4

noun

ˈef 

plural f's or fs ˈefs 

often capitalized, often attributive

1

a

: the 6th letter of the English alphabet

b

: a graphic representation of this letter

c

: a speech counterpart of orthographic f

2

: the fourth tone of a C-major scale

3

: a graphic device for reproducing the letter f

4

: one designated f especially as the sixth in order or class

5

a

: a grade rating a student's work as failing

b

: one graded or rated with an F

6

: something shaped like the letter F

f

2 of 4

abbreviation (1)

1

failure

2

false

3

family

4

faraday

5

feast

6

female

7

feminine

8

femto-

9

fermi

10

fine

11

finish

12

fluid; fluidness

13

focal length

14

folio

15

[following] and the following one

16

force

17

forte

18

fragile

19

frequency

20

from

21

full

F

3 of 4

abbreviation (2)

1

Fahrenheit

2

farad

3

French

4

Friday

F

4 of 4

symbol

fluorine

Examples of f in a Sentence

Noun

The word “foot” begins with an f.

The word “foot” begins with f.

I got an F on the test.

Abbreviation (2)

Water freezes at 32 degrees F.

Word History

First Known Use

Noun

before the 12th century, in the meaning defined at sense 1a

Phrases Containing f

• f-bomb
• f-number
• f-stop

Kids Definition

f

noun

ˈef

plural f's or fs

often capitalized

1

: the sixth letter of the English alphabet

2

: a musical note referred to by the letter F : the fourth tone of a C-major scale

3

: a grade rating a student's work as failing

Medical Definition

f

1 of 4 abbreviation

1

farad

2

father

3

female

4

foot

5

formula

f

2 of 4 symbol

1

faraday

2

focal length

3

function

F

3 of 4 abbreviation

1

Fahrenheit

2

French

F

4 of 4 symbol

fluorine