Pollution definition

pə-lo͝oshən
The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.
noun
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The act or process of polluting or the state of being polluted, especially the contamination of soil, water, or the atmosphere by the discharge of harmful substances.
noun
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Something that pollutes; a pollutant or a group of pollutants.

Pollution in the air reduced the visibility near the airport.

noun
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The contamination of air, water, or soil by substances that are harmful to living organisms. Pollution can occur naturally, for example through volcanic eruptions, or as the result of human activities, such as the spilling of oil or disposal of industrial waste. &diamf3; Light from cities and towns at night that interferes with astronomical observations is known as light pollution. It can also disturb natural rhythms of growth in plants and other organisms. &diamf3; Continuous noise that is loud enough to be annoying or physically harmful is known as noise pollution. &diamf3; Heat from hot water that is discharged from a factory into a river or lake, where it can kill or endanger aquatic life, is known as thermal pollution.
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Pollution is something introduced into the environment that is dirty, unclean or has a harmful effect.

Toxic waste dumped into the water is an example of pollution.

noun
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Something that pollutes; a pollutant or a group of pollutants.

Pollution in the air reduced the visibility near the airport.

noun
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Something that pollutes; a pollutant.
noun
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The act of polluting or the state of being polluted, especially the contamination of the environment by harmful substances.

Nobody visits the river any more because of all the pollution.

noun
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(archaic) Physical defilement.
noun
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Other Word Forms

Noun

Singular:
pollution
Plural:
pollutions

Origin of pollution

  • Recorded since c.1340, as "discharge of semen other than during sex," later, "desecration, defilement" (1382), from Late Latin pollutio "defilement," from Latin polluere "to soil, defile, contaminate", itself from por- "before" + -luere "to smear" (related to lutum "mud" and to lues "filth", compare Greek (lyma) "filth, dirt, disgrace" and (lymax) "rubbish, refuse," Old Irish loth "mud, dirt," Lithuanian lutynas "pool, puddle"). Meaning "make physically foul" is from 1540s. Sense of "contamination of the environment" first recorded c.1860, but not common until c.1955

    From Wiktionary