C

If you typed C# and arrived at this page, then see C-sharp.

C is the third (3rd) letter in the English alphabet and ISO basic latin alphabet.

• In temperature, °C means "degrees Celsius".
• In music, C is a note sometimes referred to as “Do”.
• In chemistry, C is the atom of carbon, as in C₄₀H₅₆.
• In physics, c is the speed of light, as in E=mc².
• In Roman numerals, C means "one hundred" (100).
• There is a programming language called C, see C programming language.
• In electronics, C is a type of battery.
• C can also mean the copyright symbol

• The letter "C" is pronounced as /k/, which is similar to K or Q(u). It is sometimes said as /s/.
• The letter "C"'s name in English is "cee" (said as /ˈsiː/).

• The dictionary definition of c at Wiktionary
• Media related to C at Wikimedia Commons

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