2. [syn: equinoctial point, equinox]
The Collaborative International Dictionary of English v.0.48:
Equinox \E"qui*nox\, n. [OE. equinoxium, equenoxium, L.
aequinoctium; aequus equal + nox, noctis, night: cf. F.
['e]quinoxe. See Equal, and Night.]
1. The time when the sun enters one of the equinoctial
points, that is, about March 21 and September 22. See
Autumnal equinox, Vernal equinox, under Autumnal and
When descends on the Atlantic
Stormwind of the equinox. --Longfellow.
2. Equinoctial wind or storm. [R.] --Dryden.
WordNet (r) 3.0 (2006):
n 1: 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
2: (astronomy) either of the two celestial points at which the
celestial equator intersects the ecliptic [syn: equinoctial
Moby Thesaurus II by Grady Ward, 1.0:
34 Moby Thesaurus words for "equinox":
aphelion, apogee, astronomical longitude, autumnal equinox,
celestial equator, celestial longitude, celestial meridian, circle,
colures, ecliptic, equator, equinoctial, equinoctial circle,
equinoctial colure, galactic longitude, geocentric longitude,
geodetic longitude, great circle, heliocentric longitude,
longitude, meridian, orbit, perigee, perihelion, period,
small circle, solstice, solstitial colure, summer solstice,
trajectory, vernal equinox, winter solstice, zodiac, zone