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pollution
 
Noun pollution has 3 senses
  1. pollution - undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
    --1 is a kind of     environmental condition; impurity, impureness
    --1 has particulars:
     biodegradable pollution; nonbiodegradable pollution; air pollution; noise pollution, sound pollution; thermal pollution; water pollution
    Derived form: verb pollute1
  2. befoulment, defilement, pollution - the state of being polluted
    --2 is a kind of dirtiness, uncleanness
    Derived form: verb pollute1
  3. contamination, pollution - the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
    --3 is a kind of soiling, soilure, dirtying
    --3 has particulars: dust contamination
    Derived form: verb pollute1
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