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chlorophenol chlo·ro·phe·nol (klôr'ō-fē'nôl', -nōl')
One of several substitution products obtained by the action of chlorine on phenol and used as an antiseptic.
any of a group of toxic, colourless, weakly acidic organic compounds in which one or more of the hydrogen atoms attached to the benzene ring of phenol have been replaced by chlorine atoms; 2-chlorophenol is a liquid at room temperature, but all the other chlorophenols are solids. Most applications of chlorophenols are based on their toxicity: they and compounds made from them are used to control bacteria, fungi, insects, and weeds. Many members of the group are manufactured by treating phenol with chlorine; a few are made by hydrolysis of polychlorobenzenes.