noun
also quer·ci·tin ˈkwərsətə̇n
( -s )
Etymology: International Scientific Vocabulary quercet-, quercit- (from Latin quercetum oak forest, from quercus oak + -etum ) + -in — more at fir
: a yellow crystalline flavonol pigment C 15 H 5 O 2 (OH) 5 occurring usually in the form of glycosides (as quercitrin and rutin) in various plants and in the form of the dihydro derivative in Douglas fir