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noun Chemistry.
any of a group of internal esters derived from hydroxy acids.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Lactone
is always a great word to know.
So is oxidation. Does it mean:
| the process or result of a chemical reaction to oxygen, or the deposit that forms on the surface of a metal as it oxidizes |
| the molecular weight of a substance expressed in grams; a gram molecule |
Collins
Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary
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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Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
lactone  (lāk'tōn') Pronunciation Key
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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Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia
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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