What does equinox mean?

Definitions for equinox
ˈi kwəˌnɒks, ˈɛk wə-equinox

Here are all the possible meanings and translations of the word equinox.

Princeton's WordNet

  1. equinoxnoun

    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, equinoxnoun

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


  1. equinoxnoun

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

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

Samuel Johnson's Dictionary

  1. EQUINOXnoun

    1.Equinoxes are the precise times in which the sun enters into the first point of Aries and Libra; for then, moving exactly under the equinoctial, he makes our days and nights equal. This he doth twice a year, about the 21st of March and 23rd of September, which therefore are called the vernal and autumnal equinoxes. John Harris

    Etymology: æquus and nox, Latin.

    It ariseth not unto Biarmia, and heliacally about the autumnal equinox. Thomas Browne, Vulgar Errours, b. iv. c. 13.

    The time when this kid was taken out of the womb was about the vernal equinox. John Ray, on the Creation.

    ’Twas now the month in which the world began,
    If March beheld the first created man;
    And since the vernal equinox, the sun
    In Aries twelve degrees or more had run. Dryden.

    Do but see his vice;
    ’Tis to his virtues a just equinox,
    The one as long as th’ other. William Shakespeare, Othello.

    The passage yet was good; the wind, ’tis true,
    Was somewhat high, but that was nothing new,
    No more than usual equinoxes blew. Dryden.

Webster Dictionary

  1. Equinoxnoun

    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. Equinoxnoun

    equinoctial wind or storm

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


  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.

Chambers 20th Century Dictionary

  1. Equinox

    ē′kwi-noks, n. the time when the sun crosses the equator, making the night equal in length to the day, about 21st March and 23d Sept.—adj. Equinoc′tial, pertaining to the equinoxes, the time of the equinoxes, or to the regions about the equator.—n. a great circle in the heavens corresponding to the equator of the earth.—adv. Equinoc′tially, in the direction of the equinox.—Equinoctial gales, high gales popularly supposed to prevail about the times of the equinoxes—the belief is unsupported by observation. [L. æquus, equal, nox, noctis, night.]

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  1. Chaldean Numerology

    The numerical value of equinox in Chaldean Numerology is: 3

  2. Pythagorean Numerology

    The numerical value of equinox in Pythagorean Numerology is: 6

Examples of equinox in a Sentence

  1. Steve Carlisle:

    This new investment represents a very effective way for us to meet strong demand for the Chevrolet Equinox and it's positive news for our community.

  2. Soren Kisiel:

    Camp Equinox's the mission of Hidden Valley Camp, to instill in these kids a sense of community so they're working together and supporting each other, i can't imagine delivering that online.

  3. Equinox Holdings:

    We want to let you know that Equinox and SoulCycle have nothing to do with the event and do not support it, as is consistent with our policies, no company profits are used to fund politicians.

  4. Daniel Flores:

    General Motors is voluntarily recalling certain 2014-2015 model year Chevrolet Equinox and GMC Terrain vehicles to replace the front windshield wiper-modules in these vehicles.

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