vernal equinox point

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• vernal equinox — 1. See under equinox (def. 1). 2. Also called vernal point. the position of the sun at the time of the vernal equinox. [1525 35] * * * …   Universalium

• vernal equinox — /vɜnəl ˈikwənɒks/ (say vernuhl eekwuhnoks) noun 1. See equinox (def. 1). 2. Also, vernal point. the position of the sun on the celestial equator at the time of the vernal equinox …  

• vernal equinox — noun 1. March 21 • Syn: ↑March equinox, ↑spring equinox • Ant: ↑autumnal equinox • Hypernyms: ↑equinox • Hyponyms: ↑Noruz, ↑ …   Useful english dictionary

• vernal equinox — i. That point of intersection of the ecliptic and the celestial equator occupied by the sun as it changes from a south to a north declination, on or about March 21. Also called the March equinox or the first point of Aries. ii. That instant the… …   Aviation dictionary

• vernal equinox — noun a) the moment when the sun appears to cross the celestial equator, heading northward b) the point where the ecliptic intersects the celestial equator at that time …   Wiktionary

• vernal equinox — noun 1》 the spring equinox. 2》 Astronomy another term for First Point of Aries (see Aries) …   English new terms dictionary

• equinox — [ē′kwi näks΄, ek′wə näks] n. [ME < OFr equinoxe < ML aequinoxium < L aequinoctium < aequus (see EQUAL) + nox, NIGHT] 1. the time when the sun in its apparent annual movement along the ecliptic crosses the celestial equator, making… …   English World dictionary

• Equinox — This article is about the astronomical event when the sun is at zenith over the Equator. For other uses, see Equinox (disambiguation). For the same event happening on other planets and setting up a celestial coordinate system, see Equinox… …   Wikipedia

• equinox — /ee kweuh noks , ek weuh /, n. 1. 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 or spring equinox) and September… …   Universalium

• equinox — i. One of the two points of intersection of the ecliptic and the celestial equators, occupied by the sun when its declination is 0°. Also called an equinoctial point. That point occupied on or about March 21, when the sun’s declination changes… …   Aviation dictionary

• equinox — n. 1 the time or date (twice each year) at which the sun crosses the celestial equator, when day and night are of equal length. 2 = equinoctial point. Phrases and idioms: autumn (or autumnal) equinox about 22 Sept. spring (or vernal) equinox… …   Useful english dictionary