Definition of light pollution
: artificial skylight (as from city lights) that interferes especially with astronomical observations
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Recent Examples of light pollution from the Web
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Los Cabos, Mexico The southern tip of Baja California is a prime spot for stargazing due to the dry, clean air and minimal light pollution.
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The rugged stretch of coastline is regularly visited by whales, porpoises, and dolphins, and its northerly location means little light pollution (and lots of stars) at night.
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Unlike the lunar eclipse, the supermoon will last for several hours and factors, such as light pollution and poor weather, minimally affect its visibility.
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There are so many reasons to love small town life: There's lower crime rates and cost of living, less light pollution, and a stronger sense of community and tradition—the list goes on and on.
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There's also video from the Skyglow project, a years-long time-lapse photography experiment aimed at spreading the word about the dangers of light pollution.
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There has been some progress in fighting back against light pollution.
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Jasper is one of the world's largest Dark Sky Preserves, 4,247 square miles of untamed wilderness with little light pollution.
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Nighttime imagery also sheds light on a growing issue: light pollution.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'light pollution.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of light pollution
1968
LIGHT POLLUTION Defined for English Language Learners
light pollution
Definition of light pollution for English Language Learners
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: light from cities, vehicles, etc., that makes it difficult to see things in the sky (such as stars) at night
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