galactic equator(redirected from galactic equators)
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The great circle of the celestial sphere that lies in the plane bisecting the band of the Milky Way galaxy, inclined at an angle of approximately 62° to the celestial equator. Also called galactic 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 on the celestial sphere containing the galactic plane
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014