light pollution

noun

Definition of light pollution 

: artificial skylight (as from city lights) that interferes especially with astronomical observations

Examples of light pollution in a Sentence

Recent Examples on the Web

The surrounding mountains provide a nice backdrop and being slightly removed from urban LA means there's far less light pollution. Anna Goldwater Alexander, WIRED, "Look Closely: These Aren't Flowers—They're Fireworks," 2 July 2018 Scientists revere the mountain for its summit above the clouds that provides a clear view of the sky with very little air and light pollution. Washington Post, "Giant telescope project before Hawaii Supreme Court again," 21 June 2018 The home had a welcoming, lived-in feeling, says Gilder, and there was minimal light pollution. Samantha Weiss Hills, Curbed, "A Fire Island house brings the spirit of sand and surf indoors," 9 July 2018 And because fireflies light up less when light pollution is present, visitors with flashlights and cellphones can interrupt mating and impact the next firefly generation. Washington Post, "TravelLab: In a forest on the trail of synchronous fireflies," 20 June 2018 But with light pollution threatening our view of the stars in many urban and suburban areas, the best way to get a good glimpse is to travel somewhere really, really dark. Megan Michelson, Outside Online, "These Are the Best Stargazing Spots in North America," 13 July 2018 Night skies are unimpeded by light pollution, guaranteeing spectacular views of the Milky Way. David Swanson, latimes.com, "National parks where you can find solitude in summer," 1 July 2018 Text appears on a black background to minimize light pollution. azcentral, "GalaPro app’s accessibility, translation services come to ASU Gammage, Tony Awards," 9 June 2018 But what for those astronomers out there, the park is also low on light pollution, giving skywatchers perfect nights to view the stars. Jason Duaine Hahn, PEOPLE.com, "Thinking About Visiting a National Park? Here's Everything You Need to Know for the Best Trip Ever," 3 July 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'light 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 light pollution

1968, in the meaning defined above

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Last Updated

14 Oct 2018

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The first known use of light pollution was in 1968

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More Definitions for light pollution

light pollution

noun

English Language Learners Definition of light pollution

: light from cities, vehicles, etc., that makes it difficult to see things in the sky (such as stars) at night

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