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Meaning of isoprene

i•so•prene

Pronunciation: (ī'su-prēn"), [key]
— n. Chem.
  1. a colorless, volatile, water-insoluble liquid, CH, of the terpene class, usually obtained from rubber or from oil of turpentine by pyrolysis: used chiefly in the manufacture of synthetic rubber by polymerization.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.