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light pollution

noun

Definition of light pollution

  1. :  artificial skylight (as from city lights) that interferes especially with astronomical observations

See light pollution defined for English-language learners

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Vocabulary Thrives in Darkness

First Known Use of light pollution

1968

LIGHT POLLUTION Defined for English Language Learners

light pollution

noun

Definition of light pollution for English Language Learners

  • : light from cities, vehicles, etc., that makes it difficult to see things in the sky (such as stars) at night

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