polychlorinated naphthalene

/P AA0 L IY0 K L AO1 R IH0 N EY0 T IH0 D N AE0 F TH AH0 L IY0 N/
noun
  1. 1

    (organic chemistry) Any of a range of compounds manufactured by treating naphthalene with chlorine; they have a variety of properties and uses.

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