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2017 Word of the Year

polyphenol

[pol-ee-fee-nawl, -nol] /ˌpɒl iˈfi nɔl, -nɒl/
noun, Chemistry.
1.
a polymeric phenol.
Origin of polyphenol
1895-1900
First recorded in 1895-1900; poly- + phenol
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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polyphenol in Science
polyphenol
  (pŏl'ē-fē'nôl', -nōl')   
Any of various alcohols containing two or more benzene rings that each have at least one hydroxyl group (OH) attached. Many polyphenols occur naturally in plants and some kinds, such as the flavonoids and tannins, are believed to be beneficial to health.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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