-nȯl, -nōl noun
( -s )
Etymology: International Scientific Vocabulary flavone + -ol; originally formed in German
: any of various hydroxy derivatives of flavone ; especially : the colorless crystalline 3-hydroxy compound C 15 H 9 O 2 (OH) many of whose derivatives occur as yellow plant pigments often in the form of glycosides (as quercetin, morin)