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单词 vernal point
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vernal point
vernal point n. Astronomy the point on the celestial equator at which it is intersected by the ecliptic and which the sun passes at the vernal equinox; = first point of Aries n. at point n.1 Phrases 5a.
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1550 A. Askham Treat. State & Disposition Worlde sig. A.v The vernall poynt of the equinoctiall.
1648 H. Johnsen Anti-Merlinus 33 Saturne in the figure of the Suns ingresse into the vernall point Aries, in the eighth house.
1741 Chambers's Cycl. (ed. 5) at Equinox The time when he [sc. the sun] enters the vernal point is particularly denominated the vernal, and that when he enters the autumnal point, the autumnal equinox.
1854 E. Willard Astronography x. 107 The Sun is in the Vernal Point, and since it is midnight, he is in the Meridian of our Nadir.
1994 J. North Fontana Hist. Astron. & Cosmol. iii. 37 The Earth's axis does not hold a constant orientation in space, with the result that the vernal point is moving with reference to the stars.
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