Etymology
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parhelion (n.)

"mock-sun, an intensification of light on the solar halo," 1640s, from Greek parhelion "a mock-sun," from assimilated form of para- "beside" (see para- (1)) + hēlios "sun" (from PIE root *sawel- "the sun").

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Definitions of parhelion

parhelion (n.)
a bright spot on the parhelic circle; caused by diffraction by ice crystals;
two or more parhelia are usually seen at once
Synonyms: mock sun / sundog
From wordnet.princeton.edu