[pahr-hee-lee-uh n, -heel-yuh n]
- a bright circular spot on a solar halo; a mock sun: usually one of two or more such spots seen on opposite sides of the sun, and often accompanied by additional luminous arcs and bands.
Origin of parhelion
Also called sundog.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for parhelion
I do not always know him in these cases as my own parhelion.
Once or twice he saw a fourth parhelion, directly under the sun; but this is not common.
A Parhelion is a meteor in form of a bright light, appearing on one side of the sun.
At each point of contact occurs a parhelion which is a mock sun of brilliant colors and called a sun-dog.Reading the Weather
Thomas Morris Longstreth
A parhelion or mock sun observed near Marienburg in western Prussia.The Every Day Book of History and Chronology
- 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 sunsetAlso called: mock sun, sundog Compare anthelion
C17: via Latin from Greek parēlion, from para- 1 (beside) + hēlios sun
Word Origin and History for parhelion
Online Etymology Dictionary, © 2010 Douglas Harper
- 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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.