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moon pillar

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noun Astronomy.
a halo phenomenon in which a vertical streak of light appears above and below the moon, believed to be caused by the reflection of moonlight by ice crystals with vertical axes.
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On the farm, the feed for chicks is significantly different from the roosters’; ______ not even comparable.
Compare sun pillar.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

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