carbonitrile
/ˌkɑːbə(ʊ)ˈnʌɪtrʌɪl/Chemistry
noun
An organic compound containing the group —C≡N, a nitrile; specifically one in which this group can be regarded as replacing a carboxyl group in a compound named as a carboxylic acid.
Origin
1930s. From carbo- + nitrile.