|—n , pl -lia|
|Compare anthelion mock sun, Also called: sundog one of several bright spots on the parhelic circle or solar halo, caused by the diffraction of light by ice crystals in the atmosphere, esp around sunset|
|[C17: via Latin from Greek parēlion, from |
|parhelion (pär-hē'lē-ən) Pronunciation Key
A white spot appearing at times in the parhelic circle. White parhelia are believed to form from light that is reflected off of atmospheric ice crystals; colored parhelia are believed to form from light that is refracted by atmospheric ice crystals. Multiple parhelia can often be seen simultaneously. Compare anthelion.