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Definition of Vernal equinox

Vernal equinox Definition from Language, Idioms & Slang Dictionaries & Glossaries
hEnglish - advanced version

vernal equinox
1. march 21 [syn: march equinox, spring equinox]
[ant: autumnal equinox ]

2. (astronomy) the equinoctial point that lies in the constellation of pisces
vernal equinox
(astron.), the time when the sun crosses the equator when proceeding northward...
see vernal

WordNet 2.0

1. March 21
(synonym) March equinox, spring equinox
(antonym) autumnal equinox, September equinox, fall equinox
(hypernym) equinox
(hyponym) Noruz, Nowruz, Nowrooz
(part-holonym) spring, springtime
2. (astronomy) the equinoctial point that lies in the constellation of Pisces
(hypernym) equinoctial point, equinox
(classification) astronomy, uranology
Vernal equinox Definition from Science & Technology Dictionaries & Glossaries
Taking place in the Northern Hemispheric spring, it is the point at which the ecliptic intersects the celestial equator. Days and nights are most nearly equal in duration. It falls on or about March 20 and is considered the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere. It is the astronomical opposite of the autumnal equinox.
Astronomy and Physics Terms by
The Sun's position on the celestial sphere about March 21; at this time the sun's path on the ecliptic crosses the celestial equator. Alsoknown as first point of Aries; March equinox; spring equinox
Vernal equinox Definition from Encyclopedia Dictionaries & Glossaries
Wikipedia English - The Free Encyclopedia
An equinox occurs twice a year, around 20 March and 22 September. The word itself has several related definitions. The oldest meaning is the day when daytime and night are of approximately equal duration. The word equinox comes from this definition, derived from the Latin aequus (equal) and nox (night). The equinox is not exactly the same as the day when period of daytime and night are of equal length for two reasons. Firstly, sunrise, which begins daytime, occurs when the top of the Sun's disk rises above the eastern horizon. At that instant, the disk's center is still below the horizon. Secondly, Earth's atmosphere refracts sunlight. As a result, an observer sees daylight before the first glimpse of the Sun's disk above the horizon. To avoid this ambiguity, the word equilux is sometimes used to mean a day on which the periods of daylight and night are equal. Times of sunset and sunrise vary with an observer's location (longitude and latitude), so the dates when day and night are of exactly equal length likewise depend on location.

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Vernal equinox Definition from Entertainment & Music Dictionaries & Glossaries
English to Federation-Standard Golic Vulcan
ka-wak-gad t'kastik-wak
Vernal equinox Definition from Religion & Spirituality Dictionaries & Glossaries
Seasons The seasons are at least in part due to the inclination of the earth's axis, and wholly according to this explanation in modern astronomy. If there were no inclination -- if the ecliptic coincided with the equator, and the earth's axis with the poles of the equator -- there would be no seasons. In satya yuga there were no changes of season, but an eternal spring which lasted as long as the lack of polar inclination endured, but which came to an end when the third root-race fell into "sin" -- the two events coinciding. The earth's axis when without inclination is at right angles with the plane of the ecliptic. The titans or kabiri are described in The Secret Doctrine as the generators and regulators of the seasons, thus showing that they take their part with the karmic lipikas in the cosmic history of the globe. Spring, summer, autumn, and winter correspond with other quaternaries, such as the four points of the compass and the four elements; and also represent a cycle of changes from birth to dissolution and rebirth.
In theosophical literature the earth's axis is said to undergo a secular movement of inclination with interims of pausings and smaller changes, or what may be called librations; and this secular movement is on the whole continuous, so that in course of long ages the axis of the earth becomes inverted, and consequently the poles are reversed; continuing their movement, they finally return to the position of right angularity with the plane of the ecliptic.
to be continue "Seasons2 "
Glossary of Astrological Terms
Spring Equinox (northern hemisphere). The first degree of Aries, the beginning of the astrological year.