acetate rayon


  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.


  1. a synthetic textile fibre made from cellulose acetateAlso called: acetate


  1. any salt or ester of acetic acid, containing the monovalent ion CH 3 COO – or the group CH 3 COO-Systematic name: ethanoate
  2. (modifier) consisting of, containing, or concerned with the group CH 3 COO-acetate group or radical
  3. short for acetate rayon, cellulose acetate
  4. a sound recording disc composed of an acetate lacquer coating on an aluminium or plastic base: used for demonstration or other short-term purposes

1827, “salt formed by combining acetic acid with a base,” from Latin acetum “vinegar” (see acetic) + chemical suffix -ate (3). As a type of synthetic material, it is attested from 1920, short for acetate silk, etc.


  1. A salt or ester of acetic acid containing the radical group CH3COO.

  1. A salt or ester of acetic acid. Salts of acetic acid contain a metal attached to the acetic acid radical CH3COO. Esters contain another radical, such as ethyl, attached to the acetic acid radical.
  2. Cellulose acetate or a product made from it, especially fibers or film.
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