Definition of "polyphenol" [polyphenol]

• 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 (noun)

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• "Rich in polyphenol antioxidants, green tea is said by some to protect against heart disease and cancer, as well as to supply other health perks."
• "In particular, an enzyme known as polyphenol oxidase that had been held in check is loosed."
• "Pomegranates have super antioxidants called polyphenol which are really helpful."