- celluloid, synthetic - artificial as if portrayed in a film; "a novel with flat celluloid characters"
Antonym: natural (indirect, via artificial)
- celluloid - 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
--1 is a kind of thermoplastic, thermoplastic resin
--1 has substances:camphor; cellulose nitrate, nitrocellulose, guncotton, nitrocotton - film, cinema, celluloid - a medium that disseminates moving pictures; "theater pieces transferred to celluloid"; "this story would be good cinema"; "film coverage of sporting events"
--2 is a kind of medium
--2 has particulars: silver screen - film, cinema, celluloid - a medium that disseminates moving pictures; "theater pieces transferred to celluloid"; "this story would be good cinema"; "film coverage of sporting events"