(ˈ)ant|hēlyən, (ˈ)an|thē-, -lēən noun
( plural anthe·lia -yə, -ēə ; or anthelions )
Etymology: Greek anthēlion, from neuter of anthēlios, alteration of antēlios opposite the sun, from anti- anti- (I) + hēlios sun — more at solar
: the brightish white halolike spot appearing occasionally on the parhelic circle opposite the sun — called also antisun, countersun