styrene

from WordNet (r) 3.0 (2006)

styrene
    n 1: a colorless oily liquid; the monomer for polystyrene [syn:
         {styrene}, {cinnamene}, {phenylethylene}, {vinylbenzene}]

from The Collaborative International Dictionary of English v.0.48

Styrolene \Sty"ro*lene\, n. (Chem.)
   An unsaturated hydrocarbon, {C8H8}, obtained by the
   distillation of storax, by the decomposition of cinnamic
   acid, and by the condensation of acetylene, as a fragrant,
   aromatic, mobile liquid; -- called also {phenyl ethylene},
   {vinyl benzene}, {styrol}, {styrene}, and {cinnamene}.
   [1913 Webster]