- A colorless flammable material made from nitrocellulose and camphor and used to make photographic film.
- Motion-picture film: "a strange, anachronistic sight: theater pieces transferred to celluloid" (David Ansen).
- The cinema; motion pictures: "There are no heroes but in celluloid" (Charles Langbridge Morgan).
- Made of or using a material made from nitrocellulose and camphor.
- Of or portrayed on film or in motion pictures.
- Artificial; synthetic: a novel with flat, celluloid characters.
[Originally a trademark.]








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