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Noun: pollution  pu'loo-shun
  1. Undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
     
  2. The state of being polluted
    - befoulment, defilement
     
  3. The act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
    - contamination
     
  4. Waste matter that contaminates the water, air or soil
    - pollutant

Derived forms: pollutions

Type of: dirtiness, dirtying, environmental condition, impureness, impurity, soiling, soilure, uncleanness, waste, waste material, waste matter, waste product

Encyclopedia: Pollution