Of or relating to an equinox or to the equality of day and night.
Adjective of → equinox.
Fr.: colure d'équinoxe
The great circle of the celestial sphere through the celestial poles and equinoxes; the hour circle of the vernal equinox. → colure.
Fr.: points équinoxiaux
One of the two points of intersection of the ecliptic and the celestial equator. Same as equinox.