(1) A sheet of any substance used to shield an object from any influence, such as heat, light, or x-rays. (2) A sheet on which an image is projected. (3) Formerly, to make a fluoroscopic examination. (4) In psychoanalysis, concealment, as one image or memory concealing another.screen memory. (5) To examine, evaluate; to process a group to select or separate certain individuals from it. (6) A thin layer of crystals that converts x-rays to light photons to expose film; used in a cassette to produce radiographic images on film. [Fr. écran]