light pollution
noun
Definition of light pollution
: artificial skylight (as from city lights) that interferes especially with astronomical observations
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1968
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
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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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