What is "luteolin"

Luteolin \Lu"te*o*lin\, n. [From NL. Reseda luteola, fr. L. luteolus yellowish, fr. luteus: cf. F. lut['e]oline. See Luteous.] (Chem.) A yellow dyestuff obtained from the foliage of the dyer's broom ( Reseda luteola).

n. (context organic compound English) A particular flavone, found in many vegetables, that functions as an antioxidant

Luteolin is a flavone, a type of flavonoid. Like all flavonoids, it has a yellow crystalline appearance.