Ketone n. : 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.

Example:
Is there a way to change a Ketone to an alcohol in Organic Chemistry?

Taxonomy
ketones, reaction, hydrogen, unsaturated ketones, aldehydes and ketones, acetone, compounds, enol, Aromatic ketones, aldehydes, carbon, keto, carbonyl group, alcohol, CH3, cyclic, methyl vinyl ketone, ketone bodies.

Defination from the web:
ketone functional group. ... Cyclohexanone, a symmetrical cyclic ketone, is an important intermediate in the ... This reaction always produces a ketone, even with a terminal alkyne. ...