Wiktionary
adiponitrile
n. (context chemistry English) A compound with the chemical formula (CH2)4(CN)2.
Wikipedia
Adiponitrile
Adiponitrile is the organic compound with the formula (CH)(CN). This di nitrile, a viscous, colourless liquid, is an important precursor to the polymer nylon-6,6. In 2005, about one billion kilograms were produced annually.