Lactonic

lactone

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

Origin:
1840–50; lact- + -one

lactonic [lak-ton-ik] , adjective
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World English Dictionary
lactone (ˈlæktəʊn)
 
n
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
 
lactonic
 
adj

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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
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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.
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