pollutant

The definition of a pollutant is waste or another contaminants that make something, such as the air or water, unclean.

(noun)

Toxic waste is an example of a pollutant.

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See pollutant in Webster's New World College Dictionary

noun

something that pollutes; esp., a harmful chemical or waste material discharged into the water or atmosphere

Origin: < pollut(e) + -ant

See pollutant in American Heritage Dictionary 4

noun
Something that pollutes, especially a waste material that contaminates air, soil, or water.

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