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lactone

[lak-tohn]
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noun Chemistry.
  1. any of a group of internal esters derived from hydroxy acids.
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Origin of lactone

First recorded in 1840–50; lact- + -one
Related formslac·ton·ic [lak-ton-ik] /lækˈtɒn ɪk/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for lactone

lactone

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
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Derived Formslactonic (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

lactone in Medicine

lactone

(lăktōn′)
n.
  1. An anhydride formed by the removal of a water molecule from the hydroxyl and carboxyl radicals of hydroxy acids.
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Related formslac•tonic (-tŏnĭk) adj.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

lactone in Science

lactone

[lăktōn′]
  1. 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.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.