C: Information from Answers.com

Look up C or c in Wiktionary, the free dictionary.

C is the third letter in the Latin alphabet

C may also refer to:

Computing

C (programming language), developed at Bell Labs in 1972
C++, an object oriented programming language based on C
Objective-C, an object oriented programming language based on C, while available on various platforms, used mainly on Mac OS X
C# (programming language), developed at Microsoft in 2001
C (digit), a hexadecimal digit
C (magazine), a defunct Finnish computer magazine
Control-C, a keyboard control code
C, a Computable function, the set of all computable decision problems.
C:\, or "Drive C", the default letter configuration for the default hard drive in MS-DOS, PC-DOS, and Microsoft Windows.

C battery (size)
C battery (type), grid bias battery for vacuum tube radios
Battery charging rate. Signifies a charge or discharge rate equal to the capacity of a battery divided by 1 hour. For example C for a 1600 mAh battery would be 1600 mA (or 1.6 amps). 2C is twice this rate and 1/2C is half the rate.
C-clamp, a type of fastener
C band, radio frequency band from 4 GHz to 6 GHz
C, the standard abbreviation for an electronic capacitor, used e.g. in circuit diagrams

Vitamin C
Haplogroup C (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
Haplogroup C (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
ATC code C Cardiovascular system, a section of the Anatomical Therapeutic Chemical Classification System
C1 to C7, cervical vertebrae
C, chemical symbol for the element carbon
C, a prefix for astronomical objects listed in the Caldwell catalogue
c, the speed of light in a vacuum
c, the speed of sound
c, the specific heat of a substance
Cytosine, nucleic acid
C, Capacitance
Cysteine

A digit meaning twelve in hexadecimal and other positional numeral systems with a radix of 13 or greater
C, the Constant of integration
Ⅽ, in Roman numerals, the symbol for 100
ℂ or $\mathbb{C}$ , the set of all complex numbers
ℭ or $\mathfrak c$ , the cardinality of the continuum
C, the set of continuous functions
- $C^0, C^1, C^2, \dots, C^\infty$ , differentiability classes
In probability theory, the combination or "choose" function, phrased as "choose n objects k at a time" or "n choose k", using the notations
$\mathbf{C}(n,k)$ , $\mathbf{C}_k^n$ , $\mathbf{_nC_k}$ , or ${n \choose k}$

C, alias for Mansfield Smith-Cumming (1859-1923), Chief of the SIS, the UK Secret Intelligence Service, also known as MI6
- His successors as Chief of the SIS have since been generally known by his alias, C.

	C. of C. (abbreviation)
	Capillaria
	disjunction elimination (philosophy)

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