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Meaning of polychlorinated biphenyl

pol•y•chlo'rin•at•ed biphen'yl

Pronunciation: (pol"ē-klôr'u-nā"tid, -klōr'-), [key]
— Chem. Chem.
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Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.