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night-sky light

American  
[nahyt-skahy] / ˈnaɪtˌskaɪ /

noun

  1. the faint glow of the night sky, caused by such phenomena as airglow and zodiacal light.

Etymology

Origin of night-sky light

First recorded in 1975–80

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.