light pollution


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 lack of light pollution makes Providence Canyon an ideal setting for stargazing. Mary Caldwell, ajc, 6 Sep. 2021 At night, enjoy regional cuisine cooked by personal chefs and head out for astronomy expeditions to take in the skies, which are almost entirely free of light pollution. Karen Catchpole, Travel + Leisure, 21 Aug. 2021 Located in Sugarloaf Ridge State Park in Santa Rosa, this is the largest observatory on the West Coast and is nestled amid a ring of hills that block out the light pollution from nearby cities, making for optimal stargazing. Rachel Cormack, Robb Report, 30 July 2021 At that rate, specialists say, light pollution will double in less than 50 years., 22 Aug. 2021 Utah has 24 locations, from national parks to small towns, where light pollution is at a minimum. Sean P. Means, The Salt Lake Tribune, 15 Aug. 2021 Great Sand Dunes is one of 27 national parks and monuments, nearly all in the intermountain West, that are designated as dark-sky parks, where light pollution from cities is scant. New York Times, 13 Aug. 2021 The area has a population of just 800, which means light pollution is basically nonexistent here. Stefanie Waldek, Travel + Leisure, 29 July 2021 Meteor showers are best viewed from places that are away from city lights, as light pollution can drown out the shooting stars. NBC News, 15 July 2021

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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Time Traveler for light pollution

Time Traveler

The first known use of light pollution was in 1968

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Dictionary Entries Near light pollution

light plot

light pollution

light pressure

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Statistics for light pollution

Last Updated

14 Sep 2021

Cite this Entry

“Light pollution.” Dictionary, Merriam-Webster, Accessed 28 Sep. 2021.

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More Definitions for light pollution

light pollution


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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