Cyanide radical is a term that refers to a chemical compound that has a cyanide ion (-CN) bonded to an unpaired electron. It is a highly reactive species that is often used in industrial processes and laboratory experiments. Some of the synonyms used for cyanide radical include cyanogen, cyano, and cyanyl. Cyanogen is a gaseous compound that has two cyanide ions bonded together. Cyano is a prefix that is used to denote any compound that has a carbon-nitrogen triple bond. Cyanyl is an alternative name for cyanide radicals that have an additional hydrogen atom bonded to the nitrogen atom. Although these terms have slightly different meanings, they all refer to compounds that contain the highly reactive cyanide ion.