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Related to celestial equator: celestial poles
A great circle on the celestial sphere in the same plane as the earth's equator. Also called equinoctial, equinoctial circle.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
(Astronomy) the great circle lying on the celestial sphere, the plane of which is perpendicular to the line joining the north and south celestial poles. Also called: equinoctial or equinoctial circle
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
the great circle of the celestial sphere, lying in the same plane as the earth's equator.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
A great circle on the celestial sphere in the same plane as the Earth's equator.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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|Noun||1.||celestial equator - the great circle on the celestial sphere midway between the celestial poles|
great circle - a circular line on the surface of a sphere formed by intersecting it with a plane passing through the center
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