English to English
adjective
- relating to the vicinity of the equator
source: WordNet 3.0
- relating to an equinox (when the lengths of night and day are equal)
source: WordNet 3.0
- Pertaining to an equinox, or the equinoxes, or to the time of equal day and night; as, the equinoctial line.
source: Webster 1913
noun
- the great circle on the celestial sphere midway between the celestial poles
source: WordNet 3.0
- The equinoctial line.
source: Webster 1913