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.
Find a dark location far away from light pollution. John Tufts, IndyStar, 3 Sep. 2025 According to the website linked on the signs, the group of Association residents oppose the high-density development in the rural environment with concerns about traffic congestion and noise and light pollution. Karen Billing, San Diego Union-Tribune, 1 Sep. 2025 Jean-Louis said the state also had notable light pollution in its major cities. Jasmine Laws, MSNBC Newsweek, 1 Sep. 2025 For those seeking dark skies, a light pollution map is essential, but so is timing. Jamie Carter, Space.com, 28 Aug. 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

Browse Nearby Words

Cite this Entry

“Light pollution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20pollution. Accessed 10 Sep. 2025.

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!