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ketone

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ke⋅tone

  [kee-tohn]
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–noun Chemistry.
1. any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH3COCH3 or CH3COC2H5.
–adjective
2. containing the ketone group.
Origin:
1850–55; < G Keton, aph. alter. of Aceton acetone

Related forms:
ke⋅ton⋅ic  [ki-ton-ik] , adjective
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Based on the Random House Dictionary, © Random House, Inc. 2009.
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ke·tone   (kē'tōn')   
n.  Any of a class of organic compounds, such as acetone, having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals and having the general formula R(CO)R', where R may be the same as R'.

[German Keton, shortening and alteration of Aceton, acetone : Latin acētum, vinegar; see acetum + German -on, n. suff. (alteration of -en, from Greek -ēnē).]
ke·ton'ic (-tŏn'ĭk) adj.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Word Origin & History

ketone 
1851, "group of chemicals containing CH," from Ger. keton, coined in 1848 by Ger. chemist Leopold Gmelin (1788-1853) from Ger. Aketon, from Fr. acétone (see acetone).
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: ke·tone
Pronunciation: 'kE-"tOn
Function: noun
: an organic compound (as acetone) with a carbonyl group attached to two carbon atoms
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

ketone ke·tone (kē'tōn')
n.
Any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals.

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