polyphenols

/P AA0 L IH0 F IY1 N AA0 L Z/
noun
  1. 1

    Any of a large class of organic compounds, of plant origin, having more than one phenol group; they tend to be colourful and to have antioxidant properties

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Source: https://en.wiktionary.org/wiki/polyphenol, https://en.wiktionary.org/wiki/polyphenols