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sun dog

 - 6 dictionary results

sun⋅dog

[suhn-dawg, -dog]
–noun
1. parhelion.
2. a small or incomplete rainbow.

Origin:
1625–35; orig. uncert.

par⋅he⋅li⋅on

[pahr-hee-lee-uhn, -heel-yuhn]
–noun, plural -he⋅li⋅a [-hee-lee-uh, -heel-yuh] . Meteorology.
a bright circular spot on a solar halo; a mock sun: usually one of two or more such spots seen on opposite sides of the sun, and often accompanied by additional luminous arcs and bands.
Also called sundog.
Compare paraselene.


Origin:
1640–50; alter. of L parēlion < Gk parlion, n. use of neut. of parlios beside the sun. See par-, helio-


par⋅he⋅lic, par⋅he⋅li⋅a⋅cal [pahr-hi-lahy-uh-kuhl] , adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

sundog 
"mock sun, parhelion," 1653, of obscure origin.

parhelion 
1647, from Gk. parelion "a mock sun," from para- "beside" + helios "sun" (see sol).
Online Etymology Dictionary, © 2001 Douglas Harper
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Science Dictionary
parhelion   (pär-hē'lē-ən)  Pronunciation Key 
Plural parhelia
A white spot appearing at times in the parhelic circle. White parhelia are believed to form from light that is reflected off of atmospheric ice crystals; colored parhelia are believed to form from light that is refracted by atmospheric ice crystals. Multiple parhelia can often be seen simultaneously. Compare anthelion.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia

sun dog

atmospheric optical phenomenon appearing in the sky as luminous spots 22 on each side of the Sun and at the same elevation as the Sun. Usually, the edges closest to the Sun will appear reddish. Other colours are occasionally visible, but more often the outer portions of each spot appear whitish.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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