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.
As with most celestial phenomena, observing the night sky from somewhere away from sources of light pollution like cities will afford a better view. Dan Perry, Newsweek, 31 Jan. 2025 The process isn’t only for parks far from urban light pollution. John Meyer, The Denver Post, 30 Jan. 2025 Though light pollution may not be a major issue, as Baker said, fog and clouds in the Bay Area may obstruct people’s view of the planets. Nollyanne Delacruz, The Mercury News, 30 Jan. 2025 Notably, although an individual facility may comply with the 1 percent limit, the cumulative amount of light pollution in an astronomical area is permitted to reach a level of 10 percent. Katherine Helen Laliotis, Scientific American, 29 Jan. 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

Dictionary Entries Near light pollution

Cite this Entry

“Light pollution.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/light%20pollution. Accessed 6 Feb. 2025.

Last Updated: - Updated example sentences
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