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meridian

me·rid·i·an / məˈridēən/ • n. 1. a circle of constant longitude passing through a given place on the earth's surface and the terrestrial poles. ∎  (also celestial meridian) Astron. a circle passing through the celestial poles and the zenith of a given place on the earth's surface. 2. (in acupuncture and Chinese medicine) each of a set of pathways in the body along which vital energy is said to flow. There are twelve such pathways associated with specific organs. • adj. relating to or situated at a meridian: the meridian moon. ∎ poetic/lit. of noon. ∎ poetic/lit. of the period of greatest splendor, vigor, etc.

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"meridian." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

"meridian." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. (August 23, 2017). http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/meridian-2

"meridian." The Oxford Pocket Dictionary of Current English. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/humanities/dictionaries-thesauruses-pictures-and-press-releases/meridian-2

celestial meridian

celestial meridian,vertical circle passing through the north celestial pole and an observer's zenith. It is an axis in the altazimuth coordinate system.

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"celestial meridian." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. 23 Aug. 2017 <http://www.encyclopedia.com>.

"celestial meridian." The Columbia Encyclopedia, 6th ed.. . Encyclopedia.com. (August 23, 2017). http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/celestial-meridian

"celestial meridian." The Columbia Encyclopedia, 6th ed.. . Retrieved August 23, 2017 from Encyclopedia.com: http://www.encyclopedia.com/reference/encyclopedias-almanacs-transcripts-and-maps/celestial-meridian