NITRILE Meaning of NITRILE in English /nuy"tril, -treel, -truyl/ , n. Chem.any of a class of organic compounds with the general formula RC_=N. [ 1840-50; NITR- + -ile, perh. var. of -YL ] Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012