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light pollution

noun
1.
unwanted or harmful light, as from bright street lights or neon signs.
2.
Astronomy. artificial illumination of the sky that sets a limit on the faintness of stars that can be observed or photographed.
Origin
1970-1975
1970-75
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for light pollution
  • Shielding would protect the night sky from light pollution and direct light downward as to not produce glare.
  • There's no light pollution, so the sky is bright with stars.
  • The problem is that the bulk of the film's evidence for the awfulness of light pollution is emotive.
  • And that light pollution could be messing with our circadian rhythms, which control not only sleep, but metabolism.
  • City and suburban light pollution can be another challenge to spotting the fainter flashes.
  • Even in areas with a lot of light pollution, the brightest meteors should be clear and sharp.
  • Because the long-exposure photos reveal some breathtaking views of the stars, not obscured by light pollution.
  • York's light pollution makes it difficult to see the stars.
  • The high elevation, clean air and minimal light pollution make excellent conditions to stargaze.
  • The area is still spectacular for viewing night skies, completely free of urban light pollution.
British Dictionary definitions for light pollution

light pollution

noun
1.
the glow from street and domestic lighting that obscures the night sky and hinders the observation of faint stars
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Difficulty index for light pollution

Few English speakers likely know this word

Word Value for light

9
10
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