equinox

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Related to First Point in Aries: First Point of Libra, Invernal equinox
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equinox
celestial sphere showing the positions of the autumnal and vernal equinoxes

e·qui·nox

 (ē′kwə-nŏks′, ĕk′wə-)
n.
1. Either of two points on the celestial sphere at which the ecliptic intersects the celestial equator.
2. Either of the two times during a year when the sun crosses the celestial equator and when the length of day and night are approximately equal; the vernal equinox or the autumnal equinox.

[Middle English, from Old French equinoxe, from Medieval Latin aequinoxium, from Latin aequinoctium : aequi-, equi- + nox, noct-, night; see nekw-t- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

equinox

(ˈiːkwɪˌnɒks; ˈɛkwɪˌnɒks)
n
1. (Astronomy) either of the two occasions, six months apart, when day and night are of equal length. See vernal equinox, autumnal equinox
2. (Astronomy) another name for equinoctial point
[C14: from Medieval Latin equinoxium, changed from Latin aequinoctium, from aequi- equi- + nox night]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

e•qui•nox

(ˈi kwəˌnɒks, ˈɛk wə-)

n.
the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21 (vernal equinox) and Sept. 22 (autumnal equinox).
[1350–1400; Middle English < Medieval Latin equinoxium, for Latin aequinoctium=aequi- equi- + noct-, s. of nox night + -ium -ium1]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
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equinox
Changes in seasons occur as the position of the Earth in relation to the sun changes. Equinoxes and solstices mark the beginning of opposite seasons in the Northern and Southern Hemispheres. For example, the June solstice marks the beginning of summer in the Northern Hemisphere and of winter in the Southern Hemisphere. The September equinox marks the beginning of fall in the Northern Hemisphere and of spring in the Southern Hemisphere.

e·qui·nox

(ē′kwə-nŏks′)
1. Either of the two moments of the year when the sun crosses the celestial equator. The vernal equinox occurs on March 20 or 21, and the autumnal equinox occurs on September 22 or 23. The days on which an equinox falls have about equal periods of sunlight and darkness.
2. Either of the two points on the celestial sphere where the apparent path of the sun (known as the ecliptic) crosses the celestial equator. Compare solstice.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

equinox

“Equal night,” the two points at which the ecliptic intersects the celestial equator to produce the seasonal spring (vernal) equinox and autumnal (fall) equinox.
Dictionary of Unfamiliar Words by Diagram Group Copyright © 2008 by Diagram Visual Information Limited
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.equinox - 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 lengthequinox - 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
cosmic time - the time covered by the physical formation and development of the universe
2.equinox - (astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
astronomy, uranology - the branch of physics that studies celestial bodies and the universe as a whole
celestial point - a point in the heavens (on the celestial sphere)
vernal equinox - (astronomy) the equinoctial point that lies in the constellation of Pisces
autumnal equinox - (astronomy) the equinoctial point that lies in the constellation of Virgo
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
الإعْتِدال الرَّبيعي أو الخَريفي
rovnodennost
jævndøgn
ekvinokso
päiväntasaus
napéjegyenlőség
jafndægur
equinoctium
ekvinokcija
ekvinokcija
rovnodennosť
dagjämning
gün-tün eşitliği

equinox

[ˈiːkwɪnɒks] Nequinoccio m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

equinox

[ˈiːkwinɒks ˈɛkwinɒks] néquinoxe m spring equinox, autumn equinox
Collins English/French Electronic Resource. © HarperCollins Publishers 2005

equinox

nTagundnachtgleiche f, → Äquinoktium nt; the spring/autumn equinoxdie Frühjahrs-/Herbst-Tagundnachtgleiche
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007

equinox

[ˈiːkwɪnɒks] nequinozio
Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

equinox

(ˈekwinoks) noun
the time when the sun crosses the equator, about March 21 and September 23.
Kernerman English Multilingual Dictionary © 2006-2013 K Dictionaries Ltd.