Definition of carbonitrile in US English:

carbonitrile

noun

Chemistry
  • 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.

Pronunciation

carbonitrile

/ˌkɑːbə(ʊ)ˈnʌɪtrʌɪl/