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.]

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]

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]
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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.

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.
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
Translations
الإعْتِدال الرَّبيعي أو الخَريفي
rovnodennost
jævndøgn
ekvinokso
päiväntasaus
napéjegyenlőség
jafndægur
equinoctium
ekvinokcija
ekvinokcija
rovnodennosť
dagjämning
gün-tün eşitliği

equinox

[ˈiːkwɪnɒks] Nequinoccio m

equinox

[ˈiːkwinɒks ˈɛkwinɒks] néquinoxe m spring equinox, autumn equinox

equinox

nTagundnachtgleiche f, → Äquinoktium nt; the spring/autumn equinoxdie Frühjahrs-/Herbst-Tagundnachtgleiche

equinox

[ˈiːkwɪnɒks] nequinozio

equinox

(ˈekwinoks) noun
the time when the sun crosses the equator, about March 21 and September 23.