dioritic,a.|daɪɒˈrɪtɪk| [f. diorite + -ic.] Of the nature of diorite; containing diorite. 1847in Craig.1853Kane Grinnell Exp. vii. (1856) 55 A similar range..on the Atlantic side, evidently a continuation of the same dioritic series.1862Dana Man.Geol. iii. 78 Dioritic Schist.