Hypertext Webster Gateway: "vinyl"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Vinyl \Vi"nyl\, n. [L. vinum wine + -yl.] (Chem.)
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.
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Ethenyl \Eth"e*nyl\, n. [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}.
From WordNet (r) 1.7 (wn)
vinyl
n 1: a univalent chemical radical derived from ethylene [syn: {vinyl
group}, {vinyl radical}]
2: shiny and tough and flexible plastic; used especially for
floor coverings
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