polybrominated biphenyl

noun
poly·​bro·​mi·​nat·​ed biphenyl | \ˌpä-lē-ˈbrō-mə-ˌnā-təd- \

Definition of polybrominated biphenyl 

: any of several compounds that are similar to polychlorinated biphenyls in environmental toxicity and in structure but that have various hydrogen atoms replaced by bromine rather than chlorine

called also PBB

First Known Use of polybrominated biphenyl

1975, in the meaning defined above

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The first known use of polybrominated biphenyl was in 1975

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polybrominated biphenyl

noun
poly·​bro·​mi·​nat·​ed biphenyl | \ˌpäl-i-ˈbrō-mə-ˌnāt-əd- \

Medical Definition of polybrominated biphenyl 

: any of several compounds that are similar to polychlorinated biphenyls in environmental toxicity and in structure except that various hydrogen atoms are replaced by bromine rather than chlorine

called also PBB

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