light pollution

noun

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

Examples of light pollution in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
So, find a dark place free of light pollution with a view of the western horizon. Eric Lagatta, USA TODAY, 26 Feb. 2025 As with most celestial phenomena, observing the night sky somewhere away from sources of light pollution like cities will afford a better view. Tom Rogers, Newsweek, 20 Feb. 2025 Big Bend has the least amount of light pollution of any other national park unit in the lower 48 states, so star parties and moonlit walks are a regular part of the park’s programming. Amanda Ogle, Travel + Leisure, 15 Feb. 2025 The best time to see the planets is after dusk on a clear night in a spot that is away from city lights and other forms of light pollution. Denise Chow, NBC News, 8 Feb. 2025 See All Example Sentences for light pollution

Word History

First Known Use

1969, in the meaning defined above

Time Traveler
The first known use of light pollution was in 1969

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Cite this Entry

“Light pollution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20pollution. Accessed 4 Mar. 2025.

Last Updated: - Updated example sentences
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