paranthelion
/ˌparantˈhiːlɪən/ /ˌparanˈθiːlɪən/Meteorology
noun
A diffuse, bright spot in the sky seen at the same altitude as the sun and at an angular distance from it varying from 90° to 140°, caused by refraction of sunlight through prismatic ice crystals in the atmosphere.
Origin
Late 19th century. From para- + anthelion, probably after French paranthélie.