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 (fôg′bō′, fŏg′-)
A faint white or yellowish arc-shaped light, similar to a rainbow, that sometimes appears in fog opposite the sun. Also called seadog.
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.


(Physical Geography) a faint arc of light sometimes seen in a fog bank. Also called: seadog or white rainbow
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈfɒgˌboʊ, ˈfɔg-)

a bow or arc of white or yellowish hue seen in or against a fog bank; a rainbow formed by fog droplets.
[1825–35; fog + (rain) bow]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
He has wild camped on top in a winter storm and he was also fortunate to see a "fog bow'" wreath as sunrise struck the mountain top in mid-winter.
Katherine Fotheringham snapped a picture of a fog bow, inverse clouds and a brocken spectre when she was walking up Beinn a'Chrulaiste in Glen Coe last Sunday.
We were trying to get above the clouds and as we were walking through the fog, the fog bow appeared beside us.