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[as-i-teyt] /ˈæs ɪˌteɪt/
Chemistry. a salt or ester of acetic acid.
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.
a sheet of clear plastic film fastened over the front of artwork for protection, as an overlay, or the like.
a slow-burning base material, cellulose triacetate, used for motion-picture film to minimize fire hazard during projection, and also for animation cells.
Origin of acetate
1820-30; acet- + -ate2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for acetate rayon

acetate rayon

a synthetic textile fibre made from cellulose acetate Also called acetate


any salt or ester of acetic acid, containing the monovalent ion CH3COO or the group CH3COO- Systematic name ethanoate
(modifier) consisting of, containing, or concerned with the group CH3COO-: acetate group or radical
a sound recording disc composed of an acetate lacquer coating on an aluminium or plastic base: used for demonstration or other short-term purposes
Derived Forms
acetated, adjective
Word Origin
C19: from acetic + -ate1
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for acetate rayon



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.

Online Etymology Dictionary, © 2010 Douglas Harper
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acetate rayon in Medicine

acetate ac·e·tate (ās'ĭ-tāt')
A salt or ester of acetic acid containing the radical group CH3COO.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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acetate rayon in Science
  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.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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