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c

1

or c.

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abbreviation
(with a year) about: c1775.
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Origin of c

1
From Latin circā, circiter, circum

Words nearby c

Other definitions for c (2 of 13)

c2

or c.


abbreviation
Optics. candle; candles.
cycle; cycles.

Other definitions for c (3 of 13)

c3

Symbol.
Physics, Optics. the speed of light in a vacuum: standardized as 186,282.4 miles per second (299,792,458 meters per second).
Physics, Acoustics. the speed of sound.

Other definitions for c (4 of 13)

or c.


(in prescriptions) with.

Origin of

From the Latin word cum

Other definitions for c (5 of 13)

c≻

Printing.
capitals and small capitals.

Other definitions for c (6 of 13)

C1

or c

[ see ]
/ si /

noun, plural C's or Cs, c's or cs.
the third letter of the English alphabet, a consonant.
any spoken sound represented by the letter C or c, as in cat, race, or circle.
something having the shape of a C.
a written or printed representation of the letter C or c.
a device, as a printer's type, for reproducing the letter C or c.

Other definitions for c (7 of 13)

C2

noun
Computers. a high-level programming language: very powerful and flexible, it is used in a wide variety of applications.

Other definitions for c (8 of 13)

C3

abbreviation
Electricity. coulomb.
county (used with a number to designate a county road): C55.

Other definitions for c (9 of 13)

C4

Symbol.

Other definitions for c (10 of 13)

C-

U.S. Military.
(in designations of transport aircraft) cargo: C-54; C-124.

Other definitions for c (11 of 13)

c.1

abbreviation
gallon.

Origin of c.

1
From the Latin word congius

Other definitions for c (12 of 13)

c.2

abbreviation

Other definitions for c (13 of 13)

C.

abbreviation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use c in a sentence

British Dictionary definitions for c (1 of 7)

c

symbol for

British Dictionary definitions for c (2 of 7)

c

C

/ (siː) /

noun plural c's, C's or Cs
the third letter and second consonant of the modern English alphabet
a speech sound represented by this letter, in English usually either a voiceless alveolar fricative, as in cigar, or a voiceless velar stop, as in case
the third in a series, esp the third highest grade in an examination
  1. something shaped like a C
  2. (in combination)a C-spring

British Dictionary definitions for c (3 of 7)

C

symbol for
abbreviation for
Cuba (international car registration)
noun
a computer programming language combining the advantages of a high-level language with the ability to address the computer at a level comparable with that of an assembly language

British Dictionary definitions for c (4 of 7)

C-

abbreviation for (of US military aircraft)
cargo transportC-5

British Dictionary definitions for c (5 of 7)

c.

abbreviation for
carat
cricket caught
cent(s)
century or centuries
(used esp preceding a date) circac. 1800

Word Origin for c.

(for sense 5) Latin: about

British Dictionary definitions for c (6 of 7)

C.

abbreviation for
(on maps as part of name) Cape
Catholic
Celtic
Conservative
Corps

British Dictionary definitions for c (7 of 7)

c/-

abbreviation for Australian (in addresses)
care of
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 c (1 of 2)

c

The symbol for the speed of light in a vacuum.

Scientific definitions for c (2 of 2)

C

The symbol for carbon.
Abbreviation of capacitance, capacitor, capacity, Celsius, charge conjugation, coulomb, cytosine
A programming language developed in 1972 and commonly used for writing professional software. With only a small number of built-in functions, it requires less memory than other languages, and because most if its functions are not specific to particular computers, it can be used on many different kinds of machines. The Unix operating system was written in C.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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