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sun pillar
noun
, Astronomy.
- a halo phenomenon in which a vertical streak of light appears above and below the sun, believed to be caused by the reflection of sunlight by ice crystals with vertical axes.
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Word History and Origins
Origin of sun pillar1
First recorded in 1900–05
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Example Sentences
An unusual phenomenon known as a sun pillar forms between above the sea ice on the Chukchi Sea.
From The Guardian
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