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Meaning of pollutant

pol•lu•tant

Pronunciation: (pu-lt'nt), [key]
— n.
  1. something that pollutes.
  2. any substance, as certain chemicals or waste products, that renders the air, soil, water, or other natural resource harmful or unsuitable for a specific purpose.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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