| 1. | Chemistry. a salt or ester of acetic acid. |
| 2. | Also called acetate 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. |
| 3. | a sheet of clear plastic film fastened over the front of artwork for protection, as an overlay, or the like. |
| 4. | a slow-burning base material, cellulose triacetate, used for motion-picture film to minimize fire hazard during projection, and also for animation cells. |
acetate ac·e·tate (ās'ĭ-tāt')
n.
A salt or ester of acetic acid containing the radical group CH3COO.