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Ethyl alcohol to which a poisonous substance, such as acetone or methanol, has been added to make it unfit for consumption.
(Chemistry) chem ethanol rendered unfit for human consumption by the addition of a noxious substance, as in methylated spirits
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|Noun||1.||denatured alcohol - ethyl alcohol that is unfit for drinking but is still useful for other purposes|
ethanol, ethyl alcohol, fermentation alcohol, grain alcohol - the intoxicating agent in fermented and distilled liquors; used pure or denatured as a solvent or in medicines and colognes and cleaning solutions and rocket fuel; proposed as a renewable clean-burning additive to gasoline
methylated spirit - ethyl alcohol denatured with methyl alcohol to prevent its use as an alcoholic beverage