resveratrol noun1 •A phenolic substance, 3,5,4'-trihydroxystilbene, a stilbenoid and phytoalexin, that is found in some fruits and nuts, and in red wine, and is reputed to have some beneficial properties for humans.Resveratrol was first identified in grape vines in 1976 and in wine in 1992. — 2003 formsresveratrols
