F, 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.
3.
something having the shape of an F .
4.
a written or printed representation of the letter F or f.
5.
a device, as a printer's type, for reproducing the letter F or f.
Dictionary.com Unabridged

F

3.
Genetics. filial.
4.
5.
franc; francs.

F

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.
3.
Music.
a.
the fourth tone in the scale of C major or the sixth tone in the relative minor scale, A minor.
b.
a string, key, or pipe tuned to this tone.
c.
a written or printed note representing this tone.
d.
(in the fixed system of solmization) the fourth tone of the scale of C major, called fa.
e.
the tonality having F as the tonic note.
4.
(sometimes lowercase) the medieval Roman numeral for 40. Compare Roman numerals.
5.
Mathematics.
a.
field.
b.
function (of).
6.
(sometimes lowercase) Electricity, farad.
7.
Chemistry, fluorine.
8.
(sometimes lowercase) Physics.
a.
force.
b.
frequency.
c.
fermi.
9.
Biochemistry, phenylalanine.

f

1.
2.
Photography, f-number.
3.
Music. forte.

f

Symbol, Optics. focal length.

F-

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

F.

5.
franc; francs.

f.

1
(in prescriptions) make.

Origin:
< Latin fac

f.

2
(in prescriptions) let them be made.

Origin:
< Latin fīant

f.

3
(in prescriptions) let it be made; let there be made.

Origin:
< Latin fiat

f.

4
(in the Netherlands) guilder; guilders.

Origin:
< Dutch florin

f.

5
5.
9.
10.
fluid (ounce).
11.
13.
14.
15.
formed of.
16.
17.
18.
Mathematics. function (of).

f/

Photography.
Also, f/, f:

Weingartner

[vahyn-gahrt-nuhr]
noun
(Paul) Felix (Edler von Münzberg) [poul fey-liks eyd-luhr fuhn mynts-berk] , 1863–1942, Austrian composer, conductor, and writer.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To f
Collins
World English Dictionary
f or F (ɛf)
 
n , pl f's, F's, 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
 
F or F
 
n

f
 
symbol for
1.  music forte: an instruction to play loudly
2.  physics frequency
3.  (formerly in the Netherlands) guilder
4.  maths function (of)
5.  physics femto-
6.  chess See algebraic notation
 
[(sense 3) from Dutch: florin]

f, f/ or f:
 
symbol for
f-number
 
f/, f/ or f:
 
symbol for
 
f:, f/ or f:
 
symbol for

F
 
symbol for
1.  music
 a.  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
 b.  a key, string, or pipe producing this note
 c.  the major or minor key having this note as its tonic
2.  Fahrenheit
3.  Fellow
4.  chem fluorine
5.  Helmholtz function
6.  physics force
7.  franc(s)
8.  farad(s)
9.  genetics a generation of filial offspring, F1 being the first generation of offspring, F2 being the second generation, etc
 
abbreviation for
10.  France (international car registration)

f. or F.
 
abbreviation for , ff., FF., ff.
1.  fathom(s)
2.  female
3.  grammar feminine
4.  folio
5.  following (page)
 
F. or F.
 
abbreviation for

F-
 
abbreviation for
fighter: F-106

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

F 1

The symbol for the element fluorine.

F 2
abbr.
Fahrenheit

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
American Heritage
Science Dictionary
F  
  1. Abbreviation of Fahrenheit

  2. The symbol for farad.

  3. The symbol for fluorine.


fluorine   (flr'ēn')  Pronunciation Key 
Symbol F
A pale-yellow, poisonous, gaseous element of the halogen group. It is highly corrosive and is used to separate certain isotopes of uranium and to make refrigerants and high-temperature plastics. It is also added in fluoride form to the water supply to prevent tooth decay. Atomic number 9; atomic weight 18.9984; melting point -223°C; boiling point -188.14°C; specific gravity of liquid 1.108 (at boiling point); valence 1. See Periodic Table.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source
American Heritage
Abbreviations & Acronyms
f
  1. feminine

  2. focal length

  3. forte

  4. function

F
  1. Fahrenheit

  2. fail

  3. false

  4. farad

  5. female

  6. filial generation

  7. fine

  8. fluorine

  9. fog

  10. foul

  11. franc

  12. France (international vehicle ID)

  13. Friday

f.
  1. farthing

  2. fine

  3. folio

  4. following

  5. guilder

F.
French
f/
f stop (relative aperture of a lens)
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
Cite This Source
Example sentences for f
References breakfast cereals and how they are made, elwood f.
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;