<p><strong>Noun</strong></p><ul><li>a salt or ester of acetic acid.</li><li>Also called acetate.</li><li>rayon: a synthetic filament, yarn, or fabric composed of a derivative of the acetic ester of cellulose, differing from viscose rayon in having greater strength when wet and greater sensitivity to high temperatures.</li><li>a sheet of clear plastic film fastened over the front of artwork for protection, as an overlay, or the like.</li><li>a slow-burning base material, cellulose triacetate, used for motion-picture film to minimize fire hazard during projection, and also for animation cells.</li></ul>