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  • Definition
    • pollution : Physical contamination, now especially the contamination of the environment by harmful substances, or by disruptive levels of noise, light etc.

      • pollution : Something that pollutes; a pollutant.

        • pollution : The desecration of something holy or sacred; defilement, profanation.

          • pollution : The ejaculation of semen outside of sexual intercourse, especially a nocturnal emission.

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          • Derivative