Borrowed from French atrophie, from Latin atrophia, from Ancient Greek ἀτροφία (atrophía, “a wasting away”), from ἄτροφος (átrophos, “ill-fed, un-nourished”), from ἀ- (a-, “not”) + τροφή (trophḗ, “nourishment”), from τρέφω (tréphō, “to fatten”). Equivalent to a- + -trophy.