isoprene Meaning, Definition & Usage

I"so*prene noun
Etymology
Etymol. uncertain.
Definitions
  1. (Chem.) 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

Webster 1913