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polychlorinated biphenyl Line breaks: poly|chlor¦in|ated bi|phenyl
(abbreviation: PCB)

Definition of polychlorinated biphenyl in English:


Any of a class of toxic aromatic compounds, often formed as waste in industrial processes, whose molecules contain two benzene rings in which hydrogen atoms have been replaced by chlorine atoms.
Example sentences
  • Although trained as a veterinarian, Miyata cut his teeth as an environmental scientist researching another toxic chemical, polychlorinated biphenyl, at the Osaka Prefecture Institute of Public Health.
  • This is an important convention, as it provides for the safe disposal of persistent organic pollutants, including polychlorinated biphenyl.
  • Further tests discovered traces of some of the world's most toxic industrial chemicals, including polychlorinated biphenyls and dioxin, in Arctic wildlife.
Definition of polychlorinated biphenyl in:
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