Definition of "dinitrophenol" []

• Any of six isomeric aromatic compounds C6H3OH(NO2)2 formed by the nitration of phenol; they are metabolic poisons (noun)

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• "This compound is then decomposed by ammonia, dinitrophenylhydrazoate being formed, which on hydrolysis with alcoholic potash gives potassium hydrazoate (azide) and dinitrophenol."
• "The first was the industrial chemical dinitrophenol (DNP), which came on the market in the Thirties when it was found to speed up your metabolism."