Pollutant

//pəˈl(j)uːtənt// noun

Definitions

Noun
  1. 1
    A foreign substance that makes something dirty, or impure, especially waste from human activities.

    "Acid rain forms when water in the atmosphere condenses on particles containing acid-forming pollutants, such as sulfate produced by the burning of fossil fuels and nitrogen oxides from automobile exhausts."

  2. 2
    waste matter that contaminates the water or air or soil wordnet

Etymology

From pollute + -ant.

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