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.
Plan Your Trip Around a New Moon While a full moon is dazzling, the bright orb can act as another source of light pollution. Stephanie Vermillion, Travel + Leisure, 22 Dec. 2025 In November, the city was named Dark Sky Place of the Year by DarkSky International, a nonprofit focused on minimizing light pollution. Emily Elconin, New York Times, 21 Dec. 2025 Want stunning views of deep space, without light pollution? Chris McMullen, Space.com, 20 Dec. 2025 Under ideal conditions — clear weather and minimal light pollution — skywatchers may be able to see as many as 120 Geminid meteors per hour, according to NASA. Denise Chow, NBC news, 13 Dec. 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 31 Dec. 2025.

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