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diene

[dahy-een, dahy-een]
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noun Chemistry.
  1. any compound, as 1,3-butadiene, CH2=CH−CH=CH2, that contains two double bonds.
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Origin of diene

First recorded in 1915–20; di-1 + -ene
Also called diolefin.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for diene

diene

noun
  1. chem a hydrocarbon that contains two carbon-to-carbon double bonds in its molecules
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Word Origin

from di- 1 + -ene
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012