Ethenyl
Pronunciation : Eth"e*nyl
Part of Speech : n.
Etymology : [Ethene + -yl.] (Chem.) (a) A trivalent hydrocarbon radical, CH3.C. (b) A univalent hydrocarbon radical of the ethylene series, CH2:CH; - - called also vinyl. See Vinyl.
Source : Webster's Unabridged Dictionary, 1913