Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun equinoctial_circle

1 sense of equinoctial circle

Sense 1
celestial equator, equinoctial circle, equinoctial line, equinoctial -- (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)