'Flavin' definitions:
Definition of 'flavin'
(from WordNet)
noun
A ketone that forms the nucleus of certain natural yellow pigments like riboflavin
Definition of 'Flavin'
From: GCIDE
- Flavin \Fla"vin\, n. [L. flavus yellow.] (Chem.) A yellow, vegetable dyestuff, resembling quercitron. [1913 Webster]