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anthelion

noun ant·he·li·on \ (ˈ)ant¦hēlyən , (ˈ)an¦thē- , -lēən \
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Definition of anthelion

plural anthelia \-yə, -ēə\ or anthelions
: the brightish white halolike spot appearing occasionally on the parhelic circle opposite the sun — called also antisun, countersun

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Origin and Etymology of anthelion

Greek anthēlion, from neuter of anthēlios, alteration of antēlios opposite the sun, from anti- 1anti- + hēlios sun

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