galactic equator
noun Astronomy.
the great circle on the celestial sphere that is equidistant from the galactic poles, being inclined approximately 62° to the celestial equator and lying about one degree north of the center line of the Milky Way.
Also called
galactic circle.
Origin of galactic equator
First recorded in 1885–90
Words nearby galactic equator
British Dictionary definitions for galactic equator
galactic equator
galactic circle
noun
the great circle on the celestial sphere containing the galactic plane