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pollute (v.)

late 14c., polluten, "to defile, violate the sanctity of, render ceremonially unclean," a back formation from pollution, or else from Latin pollutus, past participle of polluere "to defile, pollute, contaminate." Related: Polluted; polluting. Meaning "make physically foul" is from 1540s; specific sense "contaminate the environment" emerged by 1860, but was not yet in the 1895 Century Dictionary.

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Definitions of pollute from WordNet

pollute (v.)
make impure;
The industrial wastes polluted the lake
Synonyms: foul / contaminate
From wordnet.princeton.edu