pollution Meaning, Definition & Usage

  1. noun undesirable state of the natural environment being contaminated with harmful substances as a consequence of human activities
  2. noun the state of being polluted
    befoulment; defilement.
  3. noun the act of contaminating or polluting; including (either intentionally or accidentally) unwanted substances or factors
    contamination.

WordNet

Pol*lu"tion noun
Etymology
L. pollutio: cf. F. pollution.
Definitions
  1. The act of polluting, or the state of being polluted (in any sense of the verb); defilement; uncleanness; impurity.
  2. (Med.) The emission of semen, or sperm, at other times than in sexual intercourse. Dunglison.

Webster 1913