Definitions
1.nounAny binary compound of carbon and a more electropositive element
2.nounThe polyatomic ion C22−, or any of its salts.
3.nounThe monatomic ion C4−, or any of its salts.
4.nounA carbon-containing alloy or doping of a metal or semiconductor, such as steel.
5.nounTungsten carbide.
6.nounTrivial name for calcium carbide (CaC2), used to produce acetylene in bicycle lamps in the early 1900s.