| 单词 |
epigene |
| 释义 |
epigene, a.|ˈɛpɪdʒiːn| [a. Fr. épigène, ad. Gr. ἐπιγενής, f. ἐπί upon, after + -γενής born, originating. The Gr. word occurs with sense ‘arising subsequently (to birth)’, said of a disease, in opposition to ‘congenital’. This use seems to be the source of sense 1; in sense 2 the prefix is taken as = ‘upon’, ‘above’.] 1. Cryst. See quot. 1823. By some writers used for pseudomorphous.
1823H. J. Brooke Introd. Crystallogr. 93 To one class of these [crystals] the Abbé Haüy has applied the name of Epigene, where a chemical alteration has taken place in the substance of the crystal subsequently to its formation. 1851Ruskin Stones Ven. (1874) I. 2nd Pref. p. xiii, The epigene crystal, formed by materials of one substance modelled on the perished crystals of another. 2. Geol. Produced on the surface of the earth: opposed to hypogene.
1880Geikie in Nature XXIII. No. 575. 4 The whole epigene army of destructive agencies, air, rain, frost, etc. 1882― Text-bk. Geol. iii. i. 196 Epigene or Surface Action—the changes produced on the superficial parts of the earth. Ibid. iii. ii. 316 The word epigene may be suggested as..antithetical to hypogene. |
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:epigene英英词典英英释义英语词汇意思用法释义英语