Definitions for ketoneˈki toʊn
Random House Webster's College Dictionary
any of a class of organic compounds containing a carbonyl group, CO, attached to two alkyl groups, as CH3COCH3.
Origin of ketone:
1850–55; < G Keton
any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals
A homologous series of organic molecules whose functional group is an oxygen atom joined to a carbon atomu2014by a double bondu2014in a carbon-hydrogen based molecule.
Origin: From keton, from Aketon, from acétone. See acetone.
one of a large class of organic substances resembling the aldehydes, obtained by the distillation of certain salts of organic acids and consisting of carbonyl (CO) united with two hydrocarbon radicals. In general the ketones are colorless volatile liquids having a pungent ethereal odor