Arc of Lowitz
or Lo·witz arc
a halo or arc of light, occurring infrequently, which extends diagonally downward from a 22° parhelion.
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. 2019