Definitions for lactoneˈlæk toʊn
Random House Webster's College Dictionary
any of a group of internal esters derived from hydroxy acids.
Origin of lactone:
1840–50; lact(ic acid)+-one
A cyclic intramolecular ester derived from a hydroxy acid.
one of a series of organic compounds, regarded as anhydrides of certain hydroxy acids. In general, they are colorless liquids, having a weak aromatic odor. They are so called because the typical lactone is derived from lactic acid