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

That report found pollution levels can vary from five to eight times along a single city street. Travis Fedschun, Fox News, "Google Street View cars to be outfitted with pollution sensors to measure US, Europe air quality," 18 Sep. 2018 The California Air Resources Board announced that pollution levels were down 13 percent since their 2004 peak — as the economy grew 26 percent since that year. Christopher Weber, BostonGlobe.com, "California meets greenhouse gas reduction goal years early," 12 July 2018 Check for more details on the air quality forecast and current pollution levels on the AIRNow website. Ese Olumhense, chicagotribune.com, "Air quality alert issued for Chicago area for second day," 12 July 2018 In normal use, however, pollution levels increased as much as 40-fold. Alastair Jamieson /, NBC News, "Audi CEO Rupert Stadler arrested in Volkswagen diesel emissions probe," 18 June 2018 Air pollution levels after closing decreased to an average of four tons of nitrogen oxides per year from 177 tons before. Nicholas Bakalar, New York Times, "Air Pollution Near Power Plants Tied to Premature Births," 22 May 2018 The study said pollution levels from nitrogen oxide fell 7% from 2005 to 2009, but only dropped 1.7% from 2011 to 2015. Doyle Rice, USA TODAY, "The USA's long battle against air pollution isn't over yet, as air quality improvements are slowing down," 30 Apr. 2018 Instead, the state will rely on a second monitor that consistently reports lower air pollution levels. Patrick Marley, Milwaukee Journal Sentinel, "Scott Walker signs bill to crack down on the straw purchases of guns," 28 Mar. 2018 In theory, fewer cars should lower pollution levels, but in London the air quality has actually deteriorated. Justin Davidson, Daily Intelligencer, "Why You Should Be in Favor of Congestion Pricing in New York," 27 Mar. 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

16 Nov 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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