n. ~ 1. A thin coating or covering. - 2. A thin, flexible sheet, especially of plastic. - 3. Photography, Motion pictures · A thin sheet of plastic, in a sheet or roll, coated with light-sensitive emulsion to be exposed in a camera. - 4. Motion pictures · A motion picture production; a movie. - 5. Motion pictures · The discipline of making motion pictures.
Film2 generally refers to unexposed materials. After the film has been developed, it is often called a negative, transparency, or slide. - Film3 is often used as a short form for microfilm.