Try Our Apps


Avoid these words. Seriously.


[as-i-tohn] /ˈæs ɪˌtoʊn/
noun, Chemistry.
a colorless, volatile, water-soluble, flammable liquid, C 3 H 6 O, usually derived by oxidation of isopropyl alcohol or by bacterial fermentation of carbohydrates: used chiefly in paints and varnishes, as a general solvent, and in organic synthesis.
Also called dimethylketone.
Origin of acetone
First recorded in 1830-40; acet- + -one
Related forms
[as-i-ton-ik] /ˌæs ɪˈtɒn ɪk/ (Show IPA),
adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
Examples from the Web for acetone
Contemporary Examples
Historical Examples
British Dictionary definitions for acetone


a colourless volatile flammable pungent liquid, miscible with water, used in the manufacture of chemicals and as a solvent and thinner for paints, varnishes, and lacquers. Formula: CH3COCH3 Systematic name propanone
Derived Forms
acetonic (ˌæsɪˈtɒnɪk) adjective
Word Origin
C19: from German Azeton, from aceto- + -one
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
Cite This Source
Word Origin and History for acetone

colorless volatile liquid, 1839, literally "a derivative of acetic acid," from Latin acetum "vinegar" (see acetic) + Greek-based chemical suffix -one, which owes its use in chemistry to this word.

Online Etymology Dictionary, © 2010 Douglas Harper
Cite This Source
acetone in Medicine

acetone ac·e·tone (ās'ĭ-tōn')

  1. A colorless, volatile, extremely flammable liquid ketone widely used as an organic solvent.

  2. An organic compound produced in excessive amounts in diabetic acidosis.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
acetone in Science
A colorless, volatile, extremely flammable liquid ketone that is widely used as a solvent, for example in nail-polish remover. Chemical formula: C3H6O.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for acetone

Difficulty index for acetone

Some English speakers likely know this word

Word Value for acetone

Scrabble Words With Friends