adjective. ['ˈsɛləˌlɔɪd'] artificial as if portrayed in a film.
noun. ['ˈsɛləˌlɔɪd'] a medium that disseminates moving pictures.
noun. ['ˈsɛləˌlɔɪd'] highly flammable substance made from cellulose nitrate and camphor; used in e.g. motion-picture and X-ray film; its use has decreased with the development of nonflammable thermoplastics.