单词 | parhelic |
释义 | parhelicadj. Of, relating to, or resembling a parhelion. Chiefly in parhelic circle n. a band of light parallel to the horizon and passing through the sun, caused by refraction of sunlight through ice crystals in the atmosphere and seen esp. around sunset. ΘΚΠ the world > the universe > luminous appearance > [noun] > mock-sun sunOE parhelion?1574 sun dog1635 mock sun1645 parhelic circle1886 1886 Nature 8 Apr. 535/2 On Thursday, April 1, a solar halo with parhelia was seen here... There was the large halo commonly seen, in addition to which a luminous ring passing through the sun encircled the sky, everywhere of the same altitude above the horizon, forming a small circle of the sphere taking the zenith as pole. On this, the parhelic circle, and outside of the halo by about 5°, a mock sun was seen both on the eastern and western sides. 1918 Science 15 Feb. 171/1 As the sun's altitude increased the parhelic circle gradually extended until it reached nearly around the horizon. 1977 Science 28 Jan. 365 (caption) Also shown is the parhelic arc, a parhelion, and a trace of the circumzenithal arc. 2003 Irish Times (Nexis) 27 Oct. 20 It has been suggested that Constantine's legendary cross may have comprised a sun pillar and a small segment of a parhelic circle. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < adj.1886 |
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