Definition of “PCB” - English Dictionary

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“PCB” in Business English

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PCBnoun [ C or U ]

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PRODUCTION, ENVIRONMENT abbreviation for polychlorinated biphenyl: a harmful chemical that is used in industry:

PCBs have been used in many products including electrical equipment, inks, adhesives, and paints.

(Definition of “PCB” from the Cambridge Business English Dictionary © Cambridge University Press)