Dictionary.com

diene

[ dahy-een, dahy-een ]
/ ˈdaɪ in, daɪˈin /

noun Chemistry.

any compound, as 1,3-butadiene, CH2=CH−CH=CH2, that contains two double bonds.

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Also called diolefin.

Origin of diene

First recorded in 1915–20; di-1 + -ene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for diene (1 of 2)

diene
/ (ˈdaɪiːn) /

noun

chem a hydrocarbon that contains two carbon-to-carbon double bonds in its molecules

Word Origin for diene

from di- 1 + -ene

British Dictionary definitions for diene (2 of 2)

-diene

n combining form

denoting an organic compound containing two double bonds between carbon atomsbutadiene

Word Origin for -diene

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