Vinyl
Pronunciation : Vi"nyl
Part of Speech : n.
Etymology : [L. vinum wine + -yl.] (Chem.)
Definition : Defn: The hypothetical radical C2H3, regarded as the characteristic residue of ethylene and that related series of unsaturated hydrocarbons with which the allyl compounds are homologous.
Source : Webster's Unabridged Dictionary, 1913