ant·he·li·on ( nt-h  l- n, n-th-)n. pl. ant·he·li·a (-l -) or ant·he·li·ons A luminous, white, halolike area occasionally seen in the sky opposite the sun on the parhelic circle. [Greek anth lion, from neuter of anthlios, opposite the sun : anti-, anti- + hlios, sun; see s wel- in Indo-European roots.] |
| anthelion (nt-hl-n, n-th-) Plural anthelia A bright white or colored spot appearing at times in the sky opposite the Sun. White anthelia are believed to form from light that is reflected off atmospheric ice crystals; colored anthelia are believed to form from light that is refracted by atmospheric ice crystals. Compare parhelion. |
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