Definitions for "Flavonoid"
Flavonoids are water-soluble plant pigments. Chemically they contain many phenolic (ring-like) stuctures. There are many different classes of flavonoids: isoflavones, anthocyanidins, flavans, flavonols, flavones, and flavanones.
Any number of compounds, including plant pigments, related to or similar in chemical structure to flavone C15H10O2.
A substance responsible for the colours yellow and orange in herbs, fruit and vegetables.