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

Like Hawaii's Big Island, the Spain site has good weather, a stable atmosphere and very little light pollution. Author: Caleb Jones, Anchorage Daily News, "Hawaii or Spain? Telescope experts say it may not matter," 26 Aug. 2019 Like Hawaii’s Big Island, the Spain site has good weather, a stable atmosphere and very little light pollution. Washington Post, "Hawaii or Spain? Telescope experts say it may not matter," 25 Aug. 2019 Like Hawaii's Big Island, the Spain site has good weather, a stable atmosphere and very little light pollution. CBS News, "Hawaii or Spain? Why experts say location might not matter for world's largest telescope," 25 Aug. 2019 Communities applying to be a dark sky community must reduce light pollution and host dark sky awareness events, according to the group's guidelines. Lorraine Longhi, azcentral, "Cave Creek looking to become Arizona's next dark sky community. But what does that mean?," 22 July 2019 Devoid of common light pollution, the 550-acre preserve is one of the best spots in the country to stargaze. Kristi Valentini, Woman's Day, "These Summer Vacation Spots Are the Hidden Gems of the Midwest," 25 June 2019 Stars in your eyes: Unobscured by light pollution, the night skies over the Galápagos are some of the most dazzling on the planet. National Geographic, "EXPLORE THE WORLD WITH NATIONAL GEOGRAPHIC," 7 June 2019 And that could mean bad news for cities trying to reduce their light pollution. Nola Taylor Redd, Science | AAAS, "Light reflected off fresh snow can outshine the moon," 9 Aug. 2019 The International Dark-Sky Association gives the designation to communities that adopt policies that allow people to enjoy the night sky free from light pollution. Lorraine Longhi, azcentral, "Cave Creek looking to become Arizona's next dark sky community. But what does that mean?," 22 July 2019

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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Statistics for light pollution

Last Updated

2 Sep 2019

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Time Traveler for light pollution

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

Comments on light pollution

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