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polychlorinated biphenyl
[ pol-ee-klawr-uh-ney-tid bahy-fen-l, ‐-feen-l ]
polychlorinated biphenyl
/ ˌpɒlɪˈklɔːrɪˌneɪtɪd /
noun
- 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 PCB
polychlorinated biphenyl
/ pŏl′ē-klôr′ə-nā′tĭd /
- See PCB
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Word History and Origins
Origin of polychlorinated biphenyl1
First recorded in 1960–65; poly- + chlorinated ( def )
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