montage (mon-tähzh') [from French, monter to mount; Fr., a mounting, setting together], noun 1. a) the art or technique of combining elements of two or more pictures imposed upon a single background to give a unified effect; b) a picture so made. 2. any combination of disparate elements that forms or is felt to form a unified whole, single image. verb (used with object) to make or incorporate into a montage.