Definitions

# C (disambiguation)

C is the third letter in the Latin alphabet

C may also refer to:

## Technology

• 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

• ¢, cent

## Mathematics

• C, the Constant of integration
• Ⅽ, in Roman numerals, the symbol for 100
• or $mathbb\left\{C\right\}$, the set of all complex numbers
• or $mathfrak c$, the cardinality of the continuum

## People

• C, alias for Mansfield Smith-Cumming (1859-1923), Chief of the SIS, the UK Secret Intelligence Service, also known as MI6