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1. Any of a large group of water-soluble antioxidant compounds, including the anthocyanins, flavonols, flavones, and isoflavonoids, often occurring as glycosides in plants and consisting of two aromatic rings linked by a carbon bridge that often forms a heterocyclic ring. Flavonoids are found in tea, red wine, and a variety of vegetables and fruits.
2. Any of various compounds that are a subset of this group, including the flavones, flavanols, and flavonols, as distinguished from the isoflavonoids. In both senses also called bioflavonoid.
(Elements & Compounds) any of a group of organic compounds that occur as pigments in fruit and flowers
[C20: from flavone + -oid]
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|Noun||1.||flavonoid - any of a large class of plant pigments having a chemical structure based on or similar to flavone|
phytochemical - a chemical substance obtained from plants that is biologically active but not nutritive
pigment - dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)