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Definition of parheliacal ring - 1 dictionary result

parhelic circle

–noun Meteorology.
a white, horizontal band passing through the sun, either incomplete or extending around the horizon, produced by the reflection of the sun's rays from the vertical faces of ice prisms in the atmosphere.
Also called parheliacal ring.


Origin:
1885–90; parhel(ion) + -ic
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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