Definitions for pcb
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Random House Webster's College Dictionary
PCB(pl.)PCB's, PCBs.
any of a family of highly toxic, possibly carcinogenic compounds consisting of two benzene rings in which chlorine replaces hydrogen, formerly used in industry: banned in the U.S. because of concern over contamination of water supplies.
Category: Chemistry
Origin of PCB:
p(oly)c(hlorinated)b(iphenyl)
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