Definition of "isoprene" [i•so•prene]

• A colorless volatile liquid, C5H8, used chiefly to make synthetic rubber. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "A tanker hauling isoprene, which is a liquid used to make synthetic rubber, overturned on I-68 going westbound near the 21st mile marker."
• "The process can use sugars derived from sugar cane, corn, corn cobs, switchgrass or other biomass to produce the ingredient, a biochemical called isoprene, derived from renewable raw materials."
• "We also extended the mechanism to include aromatic hydrocarbons, and biogenics such as isoprene and terpenes; those wound up being closer to explicit/surrogate mechanisms."