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polyene

[pol-ee-een]
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noun Chemistry.
  1. a hydrocarbon containing two or more double bonds, often conjugated.
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Origin of polyene

First recorded in 1925–30; poly- + -ene
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for polyene

polyene

noun
  1. a chemical compound containing a chain of alternating single and double carbon-carbon bonds
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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

polyene in Science

polyene

[pŏlē-ēn′]
  1. An organic compound containing at least four carbon atoms and at least two double bonds. Numerous naturally occurring plant pigments, such as carotenes, are polyenes.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.