pollution

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noun pol·lu·tion \pə-ˈlü-shən\

Definition of pollution

  1. 1 :  the action of polluting especially by environmental contamination with man-made waste; also :  the condition of being polluted

  2. 2 :  pollutant

Examples of pollution in a Sentence

  1. industrial practices that have caused pollution of the air and water

  2. The tests showed high levels of pollution in the water.

  3. The fish are dying of pollution.

Recent Examples of pollution from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pollution'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pollution

14th century


POLLUTION Defined for English Language Learners

pollution

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noun

Definition of pollution for English Language Learners

  • : the action or process of making land, water, air, etc., dirty and not safe or suitable to use

  • : substances that make land, water, air, etc., dirty and not safe or suitable to use


POLLUTION Defined for Kids

pollution

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noun pol·lu·tion \pə-ˈlü-shən\

Definition of pollution for Students

  1. :  the action of making something impure and often unsafe or unsuitable for use :  the state of being polluted


Medical Dictionary

pollution

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noun pol·lu·tion \pə-ˈlü-shən\

Medical Definition of pollution

  1. 1:  the action of polluting or the condition of being polluted

  2. 2:  pollutant



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to become worse as time passes

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