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lactone

[lak-tohn] /ˈlæk toʊn/
noun, Chemistry
1.
any of a group of internal esters derived from hydroxy acids.
Origin
1840-1850
1840-50; lact- + -one
Related forms
lactonic
[lak-ton-ik] /lækˈtɒn ɪk/ (Show IPA),
adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for lactonic

lactone

/ˈlæktəʊn/
noun
1.
any of a class of organic compounds formed from hydroxy acids and containing the group -C(CO)OC-, where the carbon atoms are part of a ring
Derived Forms
lactonic (lækˈtɒnɪk) adjective
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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lactonic in Medicine

lactone lac·tone (lāk'tōn')
n.
An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids.


lac·ton'ic (-tŏn'ĭk) adj.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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lactonic in Science
lactone
  (lāk'tōn')   
Any of various organic esters derived from organic acids by removal of water. Lactones are formed when the carboxyl (COOH) group of the acid reacts with a hydroxyl (OH) group in the same acid, releasing water and causing the carbon atom to join to the hydroxyl's remaining oxygen atom, forming a ring. Vitamin C, the antibiotic erythromycin, and many commercially important substances are lactones.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Article for lactonic

lactone

any of a class of cyclic organic esters, usually formed by reaction of a carboxylic acid group with a hydroxyl group or halogen atom present in the same molecule. Commercially important lactones include diketene and beta-propanolactone used in the synthesis of acetoacetic acid derivatives and beta-substituted propanoic (propionic) acids, respectively; the perfume ingredients pentadecanolide and ambrettolide; vitamin C; and the antibiotics methymycin, erythromycin, and carbomycin.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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