Definitions for Equinoxˈi kwəˌnɒks, ˈɛk wə-

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

Princeton's WordNetRate this definition:(0.00 / 0 votes)

  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

WiktionaryRate this definition:(0.00 / 0 votes)

  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 DictionaryRate this definition:(0.00 / 0 votes)

  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

  3. Origin: [OE. equinoxium, equenoxium, L. aequinoctium; aequus equal + nox, noctis, night: cf. F. quinoxe. See Equal, and Night.]

FreebaseRate this definition:(0.00 / 0 votes)

  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.

Translations for Equinox

From our Multilingual Translation Dictionary

Get even more translations for Equinox »


Find a translation for the Equinox definition in other languages:

Select another language:

Discuss these Equinox definitions with the community:

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:     


Use the citation below to add this definition to your bibliography:


"Equinox." STANDS4 LLC, 2015. Web. 28 Mar. 2015. <>.

Are we missing a good definition for Equinox? Don't keep it to yourself...

The Web's Largest Resource for

Definitions & Translations

A Member Of The STANDS4 Network

Nearby & related entries:

Alternative searches for Equinox:

Thanks for your vote! We truly appreciate your support.