celluloid

['sɛljulɔɪd]

1. 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

2. a medium that disseminates moving pictures;: "theater pieces transferred to celluloid"; "this story would be good cinema"; "film coverage of sporting events"