Definition of "ketone" []

• Any of a class of organic compounds, such as acetone, having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals and having the general formula R(CO)Rˌ, where R may be the same as Rˌ. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "These reactions are caused by enzymes, air or moulds (so - called ketone rancidity)."
• "_ [Greek: b] _-digallic acid by heating ethyl gallate with pyroracemic acid and sulphuric acid and proposed the so-called ketone-tannin formula: --"
• "In ketosis, the body starts breaking down whatever it can get its hands on - starting with fat, but moving on to proteins in muscle and organs - and creating byproducts called ketone bodies that will eventually reach toxic levels."