Pronunciation: (sel'yu-loid"), [key]
1. a tough, highly flammable substance consisting essentially of cellulose nitrate and camphor, used in the manufacture of motion-picture and x-ray film and other products.
2. motion-picture film.
Informal.of or involving motion pictures.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.