air·glow
(âr′glō′)n. A low- or middle-latitude, more or less steady, faint photochemical luminescence visible in the upper atmosphere at night.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
airglow
(ˈɛəˌɡləʊ) n (Physical Geography) the faint light from the upper atmosphere in the night sky, esp in low latitudes
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
air•glow
(ˈɛərˌgloʊ)
n. a dim light, usu. visible at night, that results from ionic radiation in the upper atmosphere.
[1950–55]
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