pollution

noun
pol·lu·tion | \pə-ˈlü-shən \

Definition of pollution 

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

2 : pollutant

Examples of pollution in a Sentence

industrial practices that have caused pollution of the air and water The tests showed high levels of pollution in the water. The fish are dying of pollution.
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Recent Examples on the Web

However, older engines adhere to older pollution standards. Umair Irfan, Vox, "Scott Pruitt gave “super polluting” trucks a gift on his last day at the EPA," 8 July 2018 The report, Trouble in the Air: Millions of Americans Breathe Polluted Air, is part of an annual project that uses Environmental Protection Agency (EPA) records to monitor air-pollution levels across the country. Alex Park, Houston Chronicle, "Air pollution poses health risk to Houstonians, study finds," 3 July 2018 Mr Sun of Lime thinks that its scooters could one day become mobile sensors, collecting data on everything from pollution levels to street conditions. The Economist, "How two-wheelers are weaving their way into urban transport," 21 June 2018 China is trying to reduce its dangerous pollution levels by shifting power production to natural gas from coal. Katherine Blunt, San Antonio Express-News, "Cheniere to expand Corpus Christi complex," 30 May 2018 Cities in the Americas, Europe and the Eastern Mediterranean also have air pollution levels beyond what the WHO considers healthy. Doug Criss, CNN, "5 things for May 2: Trump, Arizona teachers, migrants, Armenia, air pollution," 2 May 2018 California has a special waiver that allows it to impose stricter air pollution standards under the 1970 Clean Air Act. Grace Donnelly, Fortune, "The EPA Wants to Roll Back Regulations on Car Makers. Here's What That Means for the Auto Industry.," 30 Mar. 2018 This issue is of particular interest in California, where a waiver to the 1970 Clean Air Act allows the state to set its own air pollution standards that 12 other states also follow. Adam K. Raymond, Daily Intelligencer, "The EPA Is Set to Roll Back Vehicle Emissions Standards," 30 Mar. 2018 Plastic pollution is more about improper disposal than plastic itself. Camille Harmer, Fortune, "How Banning Plastic Straws Could Make Pollution Even Worse," 12 July 2018

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.

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First Known Use of pollution

14th century, in the meaning defined at sense 1

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Dictionary Entries near pollution

pollutant

pollute

polluting

pollution

pollutional

Pollux

poll watcher

Statistics for pollution

Last Updated

5 Oct 2018

Look-up Popularity

Time Traveler for pollution

The first known use of pollution was in the 14th century

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More Definitions for pollution

pollution

noun

English Language Learners Definition of pollution

: 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

noun
pol·lu·tion | \pə-ˈlü-shən \

Kids Definition of pollution

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

pollution

noun
pol·lu·tion | \pə-ˈlü-shən \

Medical Definition of pollution 

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

2 : pollutant

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Comments on pollution

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