Definitions for Equinoxˈi kwəˌnɒks, ˈɛk wə-

This page provides all possible meanings and translations of the word Equinox

Princeton's WordNet

  1. equinox(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

  2. equinoctial point, equinox(noun)

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

Wiktionary

  1. equinox(Noun)

    The intersection of the ecliptic (apparent path of the sun) with the celestial equator.

  2. Origin: From aequinoctium, from aequus + nox.

Webster Dictionary

  1. Equinox(noun)

    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

  2. Equinox(noun)

    equinoctial wind or storm

Freebase

  1. Equinox

    An equinox occurs twice a year, when the tilt of the Earth's axis is inclined neither away from nor towards the Sun, the center of the Sun being in the same plane as the Earth's equator. The term equinox can also be used in a broader sense, meaning the date when such a passage happens. The name "equinox" is derived from the Latin aequus and nox, because around the equinox, night and day are about equal length. At an equinox the Sun is at one of two opposite points on the celestial sphere where the celestial equator and ecliptic intersect. These points of intersection are called equinoctial points: classically, the vernal point and the autumnal point. By extension, the term equinox may denote an equinoctial point. The equinoxes are the only times when the subsolar point is on the Equator. The subsolar point crosses the Equator moving northward at the March equinox and moving southward at the September equinox.


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