WordNet: 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

• hypernym cosmic time

• hyponym March equinox, spring equinox, vernal equinox

• hyponym September equinox, autumnal equinox, fall equinox

equinox

• (englanti) equinoctial (derivationally related)
• (suomi) päiväntasaus (synonyymi)