equinoctial

Words with a similar base: equinoctial, equinoctial_circle, equinoctial_line

'equinoctial'

[celestial_equator.n.01] as in: the great circle on the celestial sphere midway between the celestial poles

'equinoctial'

[equinoctial.a.01] as in: relating to the vicinity of the equator

'equinoctial'

[equinoctial.a.02] as in: relating to an equinox (when the lengths of night and day are equal)