Definition of isoprene in English:

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Pronunciation: /ˈīsəˌprēn/


A volatile liquid hydrocarbon obtained from petroleum, whose molecule forms the basic structural unit of natural and synthetic rubbers.
  • Chemical formula: CH2C(CH3)CHCH2.
Example sentences
  • He attempted to polymerize isoprene, which was known to be a component of rubber.
  • Organolithium-initiated polymerization of isoprene was discovered in 1957.
  • Larger terpenes are uncommon, with the exception of polymeric isoprene, well known as rubber.


Mid 19th century: apparently from iso- 'equal' + pr(opyl)ene.

For editors and proofreaders

Syllabification: i·so·prene

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