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dayglow

American  
[dey-gloh] / ˈdeɪˌgloʊ /

noun

  1. airglow

Etymology

Origin of dayglow

First recorded in 1955–60; day + glow

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.