- 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 - befoulment, defilement, pollution - the state of being polluted
--2 is a kind of dirtiness, uncleanness
Derived form: verb pollute1 - 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 contaminationDerived form: verb pollute1