The Collaborative International Dictionary
Isonicotine
Isonicotine \I`so*nic"o*tine\, n. [Iso- + nicotine.] (Chem.) A crystalline, nitrogenous base, C10H14N2, isomeric with nicotine.
Wiktionary
isonicotine
n. (context organic compound English) A crystalline nitrogenous base, C10H14N2, isomeric with nicotine.