| 单词 | evection |
| 释义 | evection|ɪˈvɛkʃən|
[ad. L. ēvectiōn-em, n. of action f. ēvehĕre to carry out, f. ē- out + vehĕre to carry.]
†1. A lifting up; elevation, exaltation (in quot. fig.). Obs. rare—1.
1656in Blount Glossogr. 1659Pearson Creed (1839) 359 [Joseph's] evection to the power of Egypt next to Pharaoh.
2. Astron.
a. An inequality in the moon's longitude (see quot. 1787).
1706Phillips (ed. Kersey), Evection, or Libration of the Moon [The explanation confuses a and b.] 1787Bonnycastle Astron. 422 Evection, an inequality in the motion of the moon, by which, at her quarters, her mean place differs from her true one by about 2½ degrees more than at her conjunction and opposition. 1834Nat. Philos., Hist. Astron. ix. 45/1 (Usef. Knowl. Soc.), The evection discovered by Ptolemy is greatest in the quadratures. 1847Whewell Hist. Induct. Sc. I. 229 Such is the announcement of the celebrated discovery of the moon's second inequality afterwards called by Bulhialdus evection. 1879Newcomb & Holden Astron. 163 The disturbing action of the sun [upon the moon] produces a great number of other inequalities, of which the largest are the evection and the variation.
†b. Alleged to have been used for libration.
1706[see a]. 1796Hutton Math. Dict. I. 450 Evection is used by some astronomers for the Libration of the moon.
†3. evection of heat: the diffusion of heated particles through a fluid in the process of heating it; convection. Obs. |
英语词典包含277258条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
相关内容11：
相关热词搜索：evection英英词典英英释义英语词汇意思用法释义英语
单词 eve-eel 释义 eve-eel dial.(See quots.)1831Agric. Survey Forfarsh. (Jam.), Muraena con......
字词 白肉桂霉素 释义 【化】 leuccinamycin 汉译英翻译词典收录405719条汉英翻译词条，基本涵......
字词 白联球菌属 释义 【医】 Ascococcus 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖......
单词 eve-jar 释义 eve-jar[f. eve n.1 + jar.]= evechurr 2.1789G. White Selborne (1853) 356 ......
字词 白联珠菌 释义 【医】 leukonid 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了全......
字词 白羽扇豆硷 释义 【医】 lupanine 汉译英翻译词典收录405719条汉英翻译词条，基本涵盖了......