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单词 nonagesimal point
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nonagesimal point
1. Astronomy nonagesimal degree n. = B. Also nonagesimal point. Obsolete.
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the world > the universe > celestial sphere > circle of celestial sphere > [adjective] > ecliptic > nonagesimal
nonagesime1653
nonagesimal degree1704
the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > ecliptic > nonagesimal
nonagesimal degree1704
nonagesimal1789
1704 J. Harris Lexicon Technicum I Nonagessimal Degree, is the highest Point, or 90th Degree of the Ecliptick.
1797 Encycl. Brit. II. 522/2 Sometimes she stands, as it were, upright on her lower horn, and then such a line [sc. touching the points of the moon's horns] is perpendicular to the horizon: when this happens she is in what the astronomers call the nonagesimal degree.
1833 J. F. W. Herschel Astronomy iv. 182 The altitude of its highest point or as it is sometimes called, the nonagesimal point of the ecliptic.
1862 G. C. Lewis Astron. Anc. iv. §1 The angle of the east, which is now called the nonagesimal degree.
extracted from nonagesimaladj.n.
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