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Definition of parheliacal - 2 dictionary results

par⋅he⋅li⋅on

  [pahr-hee-lee-uhn, -heel-yuhn]
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–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-

Related forms:
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

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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