iso·​prene | \ ˈī-sə-ˌprēn How to pronounce isoprene (audio) \

Definition of isoprene

: a flammable liquid unsaturated hydrocarbon C5H8 used especially in synthetic rubber

Examples of isoprene in a Sentence

Recent Examples on the Web The scientists detected chemicals contained in our breath as well, including acetone and isoprene, plus compounds that are produced when ozone reacts with the oil on our skin. Emily Anthes, Scientific American, "Coronavirus Lockdowns May Raise Exposure to Indoor Air Pollution," 1 June 2020 Rubber is also considered plastic, both natural (isoprene) and synthetic (styrene butadiene). Los Angeles Times, "The biggest likely source of microplastics in California coastal waters? Our car tires," 2 Oct. 2019 In 2017, for instance, researchers led by the University of Minnesota found a way to produce isoprene, a key ingredient in synthetic rubber, out of natural sources such as grass, trees and corn instead of fossil fuels. Hannah Whitaker, National Geographic, "Tires: The plastic polluter you never thought about," 20 Sep. 2019 Of the VOCs measured, isoprene proved to be the most reliable indicator for differentiating among the various age classes. Jennifer Ouellette, Ars Technica, "We might be able to rate future films with a sniff test, study says," 25 Oct. 2018 Isoprene is developed by taking large petroleum molecules, heating them up to break them apart and separating the isoprene from hundreds of other products. Nathan Dicamillo, Newsweek, "New Eco-Friendly, Renewable Tires Stretch the Boundaries of Rubber Production," 6 Mar. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'isoprene.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of isoprene

1860, in the meaning defined above

History and Etymology for isoprene

probably from is- + propyl + -ene

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Time Traveler for isoprene

Time Traveler

The first known use of isoprene was in 1860

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Statistics for isoprene

Last Updated

24 Jun 2020

Cite this Entry

“Isoprene.” Dictionary, Merriam-Webster, Accessed 6 Aug. 2020.

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iso·​prene | \ ˈī-sə-ˌprēn How to pronounce isoprene (audio) \

Medical Definition of isoprene

: a flammable liquid unsaturated hydrocarbon C5H8 used especially in synthetic rubber

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