Search Result for "flavin": 
Wordnet 3.0

NOUN (1)

1. a ketone that forms the nucleus of certain natural yellow pigments like riboflavin; 



The Collaborative International Dictionary of English v.0.48:

Flavin \Fla"vin\, n. [L. flavus yellow.] (Chem.)
   A yellow, vegetable dyestuff, resembling quercitron.
   [1913 Webster]


WordNet (r) 3.0 (2006):

flavin
    n 1: a ketone that forms the nucleus of certain natural yellow
         pigments like riboflavin