What is "celluloid film"

Film \Film\, n. [AS. film skin, fr. fell skin; akin to fylmen membrane, OFries. filmene skin. See Fell skin.]

1. A thin skin; a pellicle; a membranous covering, causing opacity.

   He from thick films shall purge the visual ray.
   --Pope.

2. hence, any thin layer covering a surface.

3. A slender thread, as that of a cobweb.

   Her whip of cricket's bone, the lash of film.
   --Shak.

4. (Photog.) The layer, usually of gelatin or collodion, containing the sensitive salts of photographic plates.

5. (Photog.) a flexible sheet of celluloid or other plastic material to which a light-sensitive layer has been applied, used for recording images by the processes of photography. It is commonly used in rolls mounted within light-proof canisters suitable for simple insertion into cameras designed for such canisters. On such rolls, varying numbers of photographs may be taken before the canister needs to be replaced.

6. a motion picture.

7. the art of making motion pictures; -- used mostly in the phrase the film.

8. a thin transparent sheet of plastic, used for wrapping objects; as, polyethylene film.

   Celluloid film (Photog.), a thin flexible sheet of celluloid, coated with a sensitized emulsion of gelatin, and used as a substitute for photographic plates.

   Cut film (Photog.), a celluloid film cut into pieces suitable for use in a camera.