polychlorinated biphenyl(redirected from Polychlorinated biphenyls (PCBs))
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Related to Polychlorinated biphenyls (PCBs): Aroclor
(Elements & Compounds) any of a group of compounds in which chlorine atoms replace the hydrogen atoms in biphenyl: used in industry in electrical insulators and in the manufacture of plastics; a toxic pollutant that can become concentrated in animal tissue. Abbreviation: PCB