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[pol-ee-uhn-sach-uh-rey-tid] /ˌpɒl i ʌnˈsætʃ əˌreɪ tɪd/
adjective, Nutrition.
of or noting a class of animal or vegetable fats, especially plant oils, whose molecules consist of carbon chains with many double bonds unsaturated by hydrogen atoms and that are associated with a low cholesterol content of the blood.
Origin of polyunsaturated
First recorded in 1930-35; poly- + unsaturated Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for polyunsaturated


of or relating to a class of animal and vegetable fats, the molecules of which consist of long carbon chains with many double bonds. Polyunsaturated compounds are less likely to be converted into cholesterol in the body. They are widely used in margarines and in the manufacture of paints and varnishes See also monounsaturated
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
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Word Origin and History for polyunsaturated

1921, from poly- + unsaturated.

Online Etymology Dictionary, © 2010 Douglas Harper
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polyunsaturated in Medicine

polyunsaturated pol·y·un·sat·u·rat·ed (pŏl'ē-ŭn-sāch'ə-rā'tĭd)
Of or relating to long-chain carbon compounds, especially fats, having many unsaturated bonds.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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polyunsaturated in Science
Relating to an organic compound, especially a fat, in which more than one pair of carbon atoms are joined by double or triple bonds. See more at unsaturated.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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