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⇱ celestial equator - WordReference.com Dictionary of English


WordReference Random House Unabridged Dictionary of American English © 2026
celes′tial equa′tor, [Astron., Navig.]
  1. Astronomy, Nautical, Nautical, Astronomy, Naval Termsthe great circle of the celestial sphere, lying in the same plane as the earth's equator. Also called equator, equinoctial, equinoctial circle, equinoctial line. 
  • 1870–75

Collins Concise English Dictionary © HarperCollins Publishers::
celestial equator n
  1. the great circle lying on the celestial sphere, the plane of which is perpendicular to the line joining the north and south celestial polesAlso called: equinoctial, equinoctial circle
'celestial equator' also found in these entries (note: many are not synonyms or translations):

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