Isoprene
Pronunciation : I"so*prene
Part of Speech : n.
Etymology : [Etymol. uncertain.] (Chem.)
Definition : Defn: An oily, volatile hydrocarbon, obtained by the distillation of caoutchouc or guttaipercha.C5H8 -- unsaturated, and used to make synthetic rubber by polymerization. In organic chemistry, viewed conceptually as the building block of the terpene series of hydrocarbons
Source : Webster's Unabridged Dictionary, 1913