单词 | nonagesimal |
释义 | nonagesimaladj.n. A. adj. ΘΚΠ 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. 2. Relating to or involving the division of the quadrant into 90 degrees. ΚΠ 1871 C. Davies Metric Syst. 184 If the metre and its decimal divisions are not to be applied..; if those who circumnavigate the globe..are to make no use of it..; if their measures are still to be the nonagesimal degree, the marine league, the toise, and the foot; [etc.]. 1949 Math. Tables & Other Aids Computation 3 514 Tables of natural trigonometric functions in the nonagesimal system with the arguments taken at interval 0°.01. B. n. Astronomy and Astrology. The point of the ecliptic which is highest above the horizon at any given time, being 90 degrees round the ecliptic from the point at which it intersects the horizon. ΘΚΠ the world > the universe > celestial sphere > circle of celestial sphere > [noun] > great circle > ecliptic > nonagesimal nonagesimal degree1704 nonagesimal1789 1789 Philos. Trans. (Royal Soc.) 79 59 I have calculated them two different ways, viz. by the method of parallactic angles, and by the method of the nonagesimal. 1815 W. Burney Falconer's New Universal Dict. Marine (rev. ed.) (at cited word) The altitude of the nonagesimal is equal to the angle of the east, and, if continued, passes through the poles of the ecliptic. 1834 Nat. Philos. (Libr. Useful Knowl.) III. Astron. xii. 252/1 What we have here called the longitude of the zenith, is often called the longitude of the nonagesimal. 1891 W. Chauvenet Man. Spherical & Pract. Astron. i. i. 24 We may here define the nonagesimal, which is that part of the ecliptic which is at the greatest altitude above the horizon at any given time. 1986 J. Filbey & P. Filbey Astrologer's Compan. ii. 115 The nonagesimal is the tenth house cusp and rarely coincides with the Midheaven. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < |
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