单词 | ascensional |
释义 | ascensionaladj. 1. Of or belonging to ascension. ascensional difference in Astronomy: the difference between the right and oblique ascension of the sun or a star. ΘΚΠ the world > the universe > heavenly body > movement of heavenly bodies > [adjective] > rising rising1557 ascensional1594 ortive1635 1594 T. Blundeville Exercises iii. i. xxxiv. f. 165v The ascentionall difference being knowne, all the oblique ascentions and descentions of the starres are easily knowne by the Tables of directions. 1796 C. Hutton Math. & Philos. Dict. (new ed.) I. 148 The sun's Ascensional Difference, converted into time, shews how much he rises before or after 6 o'clock. 1834 Nat. Philos. (Libr. Useful Knowl.) III. Hist. Astron. 12/1 The ascensional difference (that is, the arc measuring the increase of the day at any place). 2. a. Of or belonging to ascent; tending upwards. ΘΚΠ the world > movement > motion in a certain direction > upward movement > [adjective] > moving upwards uprisinga1300 risingc1450 ascensial?1504 mountant1525 mounting1550 orienta1560 ascendant1591 surgenta1592 stying1593 ambitiousc1595 arising1605 ascensive1646 subliming1666 ascending1667 ascensional1753 upmounting1794 rearing1816 upcoming1835 aspirant1845 insurrectionary1864 upgoing1896 1753 Chambers's Cycl. Suppl. App. at Force Huygens [held] that bodies constantly preserve their ascensional force, that is, the product of their mass by the height to which their center of gravity can ascend. 1860 J. Tyndall Glaciers of Alps i. §20. 137 The current, however, continued ascensional. 1880 Colliery Guard. 5 Nov. The diffusion of gases in mines, and its relation to ascensional ventilation. b. ascensional screw n. a helical propeller that gives a lifting motion to an airship or flying-machine. ΘΚΠ society > travel > air or space travel > a means of conveyance through the air > rotary wing aircraft > [noun] > parts of rotary wing aircraft > rotor ascensional screw1901 lifting screw1902 rotor1915 windmill1931 tilting rotor1940 tilt rotor1961 1901 Westm. Gaz. 15 Aug. 6/1 With my ascensional screws..I am indifferent to wind, because I can rise and descend in search of a suitable belt of air. 1903 Daily Chron. 27 Sept. 7/4 A new flying machine... It is the invention of Mr. H. A. Chubb, and it rises by means of ascensional screws or helices. This entry has not yet been fully updated (first published 1885; most recently modified version published online March 2021). < adj.1594 |
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