Synonyms of equinoctial

Noun

1. celestial equator, equinoctial circle, equinoctial line, equinoctial, great circle

usage: the great circle on the celestial sphere midway between the celestial poles

Adjective

1. equinoctial

usage: relating to the vicinity of the equator

2. equinoctial

usage: relating to an equinox (when the lengths of night and day are equal)

Definition and meaning of equinoctial (Dictionary)