polychlorinated biphenyl

noun poly·chlo·ri·nat·ed biphenyl \ ˌpä-lē-ˈklȯr-ə-ˌnā-təd- \

Definition of polychlorinated biphenyl

: 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

First Known Use of polychlorinated biphenyl

1959

in the meaning defined above

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Medical Dictionary

polychlorinated biphenyl

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

medical Definition of polychlorinated biphenyl

: 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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