What does "celluloid" mean?

Any of a variety of thermoplastics created from nitrocellulose and camphor, once used as photographic film.

What is a synonym for "celluloid"?

Common synonyms include: acrylic, artificial, cinema, film, film, plastic.

Pronounced //ˈsɛljəˌlɔɪd//.

//ˈsɛljəˌlɔɪd// noun

noun ·Uncommon ·Advanced level

Noun

1
Any of a variety of thermoplastics created from nitrocellulose and camphor, once used as photographic film. countable, uncountable
"1894 June, Antonia Dickson, W. K. L. Dickson, Edison's Invention of the Kineto-Phonograph: Account of the Invention, article in Century Magazine, Volume 48, Issue 2, Then followed some experiments with drums, over which sheets of sensitized celluloid film were drawn, the edges being pressed into a narrow slot in the surface, similar in construction to the old tin-foil phonograph."
2
a medium that disseminates moving pictures wordnet
3
The genre of cinema; film. attributive, countable, figuratively, often, uncountable
"Celluloid railway comedy was hardly to appear again until the mid-thirties and, later, in Britain."
4
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 wordnet
5
An item, such as a jacket, made from celluloid. countable, obsolete, uncountable
"'What with that bearded Assyrian bull in London, and this Thug down here, who has ruined my clean celluloid, you seem to be keeping queer company, Ted Malone.'"