'Vinyl' definitions:

Definition of 'vinyl'

From: WordNet
noun
A univalent chemical radical derived from ethylene [syn: vinyl, vinyl group, vinyl radical]
noun
Shiny and tough and flexible plastic; used especially for floor coverings

Definition of 'Vinyl'

From: GCIDE
  • 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. [1913 Webster]

Definition of 'vinyl'

From: GCIDE
  • 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. [1913 Webster]