'Equinox' definitions:
Definition of 'equinox'
(from WordNet)
noun
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
noun
(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic [syn: equinoctial point, equinox]
Definition of 'Equinox'
From: GCIDE
- 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 Vernal. [1913 Webster]
- When descends on the Atlantic The gigantic Stormwind of the equinox. --Longfellow. [1913 Webster]
- 2. Equinoctial wind or storm. [R.] --Dryden. [1913 Webster]
Synonyms of 'equinox'
From: Moby Thesaurus
- 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