Read the dictionary definition of celluloid. All definitions for this word.
1. a medium that disseminates moving pictures
1. theater pieces transferred to celluloid
2. this story would be good cinema
3. film coverage of sporting events
2. 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
3. artificial as if portrayed in a film
1. a novel with flat celluloid characters