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Medical Dictionary

polychlorinated biphenyl

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noun poly·chlo·ri·nat·ed biphenyl \ˌpäl-i-ˈklōr-ə-ˌnāt-əd-, -ˈklȯr-\

Medical Definition of polychlorinated biphenyl

  1. :  any of several compounds that are produced by replacing hydrogen atoms in biphenyl with chlorine, have various industrial applications, and are toxic environmental pollutants which tend to accumulate in animal tissues—called also PCB




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