- Any of several water-insoluble compounds formed by the action of acetic acid, anhydride of acetic acid, and sulfuric acid on cellulose. Used for making lacquers, varnishes, rayon, and packaging sheets.
- A tough and flexible thermoplastic material made from cellulose, which is the main constituent of the walls of the cells of plants. It occurs in white flakes or powder, and also features high-impact strength and ease of fabrication.
- noun a sheet of transparent film used for making overlays