equinox

(redirected from Equinoctial point/History1)
Also found in: Dictionary, Legal, Encyclopedia, Wikipedia.
Related to Equinoctial point/History1: ecliptic, celestial equator, autumnal equinox
  • noun

Synonyms for equinox

either of two times of the year when the sun crosses the plane of the earth's equator and day and night are of equal length

(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic