I"so*prene (?), n. [Etymol. uncertain.] 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.