- 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
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- any salt or ester of acetic acid, containing the monovalent ion CH 3 COO – or the group CH 3 COO-Systematic name: ethanoate
- (modifier) consisting of, containing, or concerned with the group CH 3 COO-acetate group or radical
- short for acetate rayon, cellulose acetate
- a sound recording disc composed of an acetate lacquer coating on an aluminium or plastic base: used for demonstration or other short-term purposes
C19: from acetic + -ate 1
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
Word Origin and History for acetate-rayon
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
- 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.
- Cellulose acetate or a product made from it, especially fibers or film.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.