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The Collaborative International Dictionary
Ketone

Ketone \Ke"tone\ (k[=e]"t[=o]n), n. [Cf. Acetone.] (Chem.) 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.

Note: The ketones are named by adding the suffix-one to the stems of the organic acids from which they are respectively derived; thus, acetic acid gives acetone; butyric acid, butyrone, etc.

Douglas Harper's Etymology Dictionary
ketone

chemical group, 1851, from German keton, coined in 1848 by German chemist Leopold Gmelin (1788-1853) from German Aketon, from French acétone (see acetone). Its combining form is keto-.

Wiktionary
ketone

n. (context organic chemistry English) A homologous series of organic molecules whose functional group is an oxygen atom joined to a carbon atom—by a double bond—in a carbon-hydrogen based molecule.

WordNet
ketone

n. any of a class of organic compounds having a carbonyl group linked to a carbon atom in each of two hydrocarbon radicals

Wikipedia
Ketone

In chemistry, a ketone (alkanone) is an organic compound with the structure RC(=O)R', where R and R' can be a variety of carbon-containing substituents. Ketones and aldehydes are simple compounds that contain a carbonyl group (a carbon-oxygen double bond). They are considered "simple" because they do not have reactive groups like − OH or − Cl attached directly to the carbon atom in the carbonyl group, as in carboxylic acids containing − COOH. Many ketones are known and many are of great importance in industry and in biology. Examples include many sugars ( ketoses) and the industrial solvent acetone, which is the smallest ketone.

Usage examples of "ketone".

The aldehydes and ketones in the beer quickly dispelled any concern about the temperature of the brew.

The muscles are blood-rich and full of organic compounds, aldehydes, ketones and lactic acid.

There were obnoxious smells such as ketones and mercaptans, and dangerous ones such as benzene and toluene and other aromatic hydrocarbons.

There were obnoxious smells such as ketones and mercaptans, and dangerous ones such as benzene and toluene and other aromatic hydrocarbons.

I got aldehydes, ketones, acetaldehyde—the results of alkyne hydrolysis.

Simeon's sensors could hear the pounding of her heart, analyze the ketones her sweat-damp skin was emitting.

Now the circulators were working overtime to carry off the ketones of tension-sweat, and there were very convincing coffee-stains and rings by most of the recliner seats.

SO2, carbon monoxide, nitrous oxides, ketones, alcohols, and some other stuff that doesn't read out with this suit.

SO2, carbon monoxide, nitrous oxides, ketones, alcohols, and some other stuff that doesn’t read out with this suit.

Now the circulators were working overtime to carry off the ketones of tension-sweat, and there were very convincing coffee-stains and rings by most of the recUner seats.

His very scent was intimidating, overflowing with the ketones of a fresh-meat diet.

With time, as the layer of liquid water shrinks, it will become more concentrated in organics, and you'll get a whole spectrum of reactions: amino acids, aldehydes and ketones, nucleotide bases.

The odorous constituent of oil of Orris is a liquid ketone named Irone, to which the violet-like odour is due (though it is not absolutely identical with oil of Violets obtained from the natural flower), and it is the presence of this principle in the rhizome that has long led to the employment of powdered Orris root in the preparation of Violet powders, which owe very little of their scent to the real Violet perfume.