mirrorless /ˈmɪɹələs/adjective 2noun 1forms 1 adjective2 •Without a mirror. •(rare) Not mirrored; unreflective.one would discover in her eyes, large, protruding and clear, that mirrorless look of polished metals which report not so much the object as the movement of the object. — 1936 noun1 •A mirrorless interchangeable-lens camera, similar to a digital SLR, but usually made smaller by incorporating an electronic viewfinder instead of a mirror and prism. formsmirrorlesses
