Motion Pictures. 1. Also called stop-action photography, stop'-motion cinematog'raphy. a special effect, carried out while shooting, in which the performers stop their motion and the camera is stopped while an object or performer is added to or removed from the scene, with camera movement and action then resumed for the remainder of the scene: used to create an illusion of sudden appearance or disappearance of persons or objects.
2. See freeze frame (def. 1).