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Hevelian halo

[ huh-vey-lee-uhn ]

noun

  1. a faint white halo with an angular radius of 90° that is occasionally seen around the sun or the moon, thought to be caused by the reflection and refraction of sunlight by ice crystals.


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Word History and Origins

Origin of Hevelian halo1

After J. Hevelius; -ian

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gallimaufry

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