Last Updated :2025/11/20

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(organic chemistry) Any of a class of aromatic organic compounds formed by the chlorination of the hydrocarbon biphenyl; they have many industrial applications but are now considered persistent organic pollutants.

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polychlorinated biphenyl

The factory was fined after inspectors found polychlorinated biphenyl residues in the soil around the storage tanks.

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The factory was fined after inspectors found polychlorinated biphenyl residues in the soil around the storage tanks.

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