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Arc of Lowitz

or Lo·witz arc

[loh-vits]
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noun Meteorology.
  1. a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.
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Origin of Arc of Lowitz

named after Tobias Lowitz (1757-1804), German-born chemist, who published a description of a halo display observed in St. Petersburg in 1790
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018