Definitions for celestial equator
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Random House Webster's College Dictionary
celes′tial equa′tor(n.)
the great circle of the celestial sphere, lying in the same plane as the earth's equator.
Category: Astronomy, Nautical, Navy
Origin of celestial equator:
1870–75
Princeton's WordNet
celestial equator, equinoctial circle, equinoctial line, equinoctial(noun)
the great circle on the celestial sphere midway between the celestial poles
Wiktionary
celestial equator(Noun)
A great circle on the celestial sphere, coincident with the plane of earth's equator.
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