noun Chemistry.

a colorless, volatile, water-soluble, flammable liquid, C3H6O, 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.

Nearby words

  1. acetohydroxamic acid,
  2. acetoin,
  3. acetomenaphthane,
  4. acetometer,
  5. acetonaemia,
  6. acetone body,
  7. acetonemia,
  8. acetonitrile,
  9. acetonuria,
  10. acetophenetidin

Origin of acetone

First recorded in 1830–40; acet- + -one

Also called dimethylketone.

Related formsac·e·ton·ic [as-i-ton-ik] /ˌæs ɪˈtɒn ɪk/, adjective Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for acetone

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: CH 3 COCH 3Systematic name: propanone
Derived Formsacetonic (ˌæsɪˈtɒnɪk), adjective

Word Origin for acetone

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

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

Medicine definitions for acetone




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

Science definitions for acetone



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 © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.