C, 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.

Definition for c (2 of 13)

c


Symbol.

Optics, Physics. the velocity of light in a vacuum: approximately 186,000 miles per second or 299,793 kilometers per second.
Acoustics, Physics. the velocity of sound.

Definition for c (3 of 13)

c

1

(with a year) about: c1775.

Origin of c

1
From the Latin word circā, circiter, circum

Definition for c (4 of 13)

c

2

Optics. candle; candles.
Physics, Chemistry. curie; curies.
cycle; cycles.

Definition for c (5 of 13)

C


Grammar. complement.
county (used with a number to designate a county road): C55.

Definition for c (6 of 13)

C


Symbol.

Definition for c (7 of 13)


(in prescriptions) with.

Origin of

From the Latin word cum

Definition for c (8 of 13)

C-


U.S. Military.

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

Definition for c (9 of 13)

c.

1

(with a year) about: c. 1775.

Origin of c.

1
From the Latin word circā, circiter, circum

Definition for c (10 of 13)

Origin of c.

2
From the Latin word congius

Definition for c (11 of 13)

c.

3

(in prescriptions) with.

Origin of c.

3
From the Latin word cum

Definition for c (12 of 13)

Definition for c (13 of 13)

C.


Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for c

British Dictionary definitions for c (1 of 6)

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 (2 of 6)

c


symbol for

British Dictionary definitions for c (3 of 6)

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 6)

C-


abbreviation for (of US military aircraft)

cargo transportC-5

British Dictionary definitions for c (5 of 6)

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 6)

C.


abbreviation for

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

Word Origin and History for c

C


third letter of the alphabet. Alphabetic writing came to Rome via the southern Etruscan "Caeretan" script, in which gamma was written as a crescent. Early Romans made little use of Greek kappa and used gamma for both the "g" and "k" sounds, the latter more frequently, so that the "k" sound came to be seen as the proper one for gamma. To restore a dedicated symbol for the "g" sound, a modified gamma was introduced c.250 B.C.E. as G. In classical Latin -c- has only the value "k," and thus it passed to Celtic and, via Irish monks, to Anglo-Saxon, where -k- was known but little used.

In Old French, many "k" sounds drifted to "ts" and by 13c., "s," but still were written with a -c-. Thus the 1066 invasion brought to the English language a more vigorous use of -k- and a flood of French and Latin words in which -c- represented "s" (e.g. cease, ceiling, circle). By 15c. native English words with -s- were being respelled with -c- for "s" (e.g. ice, mice, lice). In some words from Italian, meanwhile, the -c- has a "ch" sound (a sound evolution in Italian that parallels the Old French one).

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for c

c


abbr.

blood capillary
small calorie
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for c (1 of 3)

c


The symbol for the speed of light in a vacuum.

Science definitions for c (2 of 3)

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.

Science definitions for c (3 of 3)

carbon

[ kärbən ]

C

A naturally abundant, nonmetallic element that occurs in all organic compounds and can be found in all known forms of life. Diamonds and graphite are pure forms, and carbon is a major constituent of coal, petroleum, and natural gas. Carbon generally forms four covalent bonds with other atoms in larger molecules. Atomic number 6; atomic weight 12.011; sublimation point above 3,500°C; boiling point 4,827°C; specific gravity of amorphous carbon 1.8 to 2.1, of diamond 3.15 to 3.53, of graphite 1.9 to 2.3; valence 2, 3, 4. See Periodic Table.
Related formscarbonaceous adjective
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.