light pollution

  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 of light pollution

First recorded in 1970–75

Words Nearby light pollution Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use light pollution in a sentence

British Dictionary definitions for light pollution

light pollution

  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