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.
They’re more removed from light pollution, so the likelihood of seeing the lights is higher. Bailey Berg, AFAR Media, 16 Jan. 2025 Therefore, skywatchers won't have to contend with the moon's bright glow drowning out the comet's brightness in the night sky (avoid city lights and other forms of light pollution when watching from Earth, too). Skyler Caruso, People.com, 10 Jan. 2025 In metro Phoenix, the black moon on Monday, Dec. 30, can be observed by finding a clear spot with minimal light pollution, though the moon itself will be invisible due to its alignment. Tiffany Acosta, The Arizona Republic, 30 Dec. 2024 Auroral activity is best seen between 10 p.m. and 2 a.m. local time while at a high vantage point away from light pollution, according to NOAA. Ty Roush, Forbes, 30 Dec. 2024 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 26 Jan. 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!