| 单词 | polyene |
| 释义 | polyene[ pol-ee-een ] / ˈpɒl iˌin / noun Chemistry.a hydrocarbon containing two or more double bonds, often conjugated. Origin of polyeneFirst recorded in 1925–30; poly- + -ene Words nearby polyenepolydrug, polydysplasia, polyelectrolyte, polyembryony, polyendocrine deficiency syndrome, polyene, polyenoic acid, polyergic, polyester, polyesthesia, polyestrous Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for polyenepolyene / (ˈpɒlɪˌiːn) / nouna chemical compound containing a chain of alternating single and double carbon-carbon bonds 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 Scientific definitions for polyenepolyene [ pŏl′ē-ēn′ ] 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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