Diallage \Di*al"la*ge\, n. [NL., fr. Gr. ? interchange, change, fr. ? to interchange.] (Rhet.) A figure by which arguments are placed in various points of view, and then turned to one point. --Smart. Diallage \Di"al*lage\ (?; 277), n. [Gr. ? change, alluding to the change and inequality of luster between the natural joints of the mineral.] (Min.) A dark green or bronze-colored laminated variety of pyroxene, common in certain igneous rocks.