English adjective: equinoctial | |||
1. | equinoctial relating to the vicinity of the equator | ||
2. | equinoctial relating to an equinox (when the lengths of night and day are equal) | ||
English noun: equinoctial | |||
1. | equinoctial (location) the great circle on the celestial sphere midway between the celestial poles | ||
Synonyms | celestial equator, equinoctial circle, equinoctial line | ||
Broader (hypernym) | great circle | ||