- any of a group of acetic esters of cellulose, used to make yarns, textiles, nonflammable photographic films, rubber and celluloid substitutes, etc.
- nonflammable material made by acetylating cellulose: used in the manufacture of film, dopes, lacquers, and artificial fibres
- Any of several compounds obtained by treating cellulose with acetic anhydride. Cellulose acetate is used in lacquers, photographic film, transparent sheeting, and cigarette filters. Also called acetate cellulose