单词 | epistrophy |
释义 | epistrophyn. Botany. rare. 1. Reversion of an abnormal plant or plant organ to the normal condition. Now disused. ΚΠ 1869 M. T. Masters Veg. Teratol. ii. i. i. 226 The reversion of a monstrous form to a normal one, as, for instance, when the fern-leaved beech reverts to the normal type, was called by the same author epistrophy. 1917 J. W. Harshberger Text-bk. Mycol. & Plant Pathol. ii. xxvii. Epistrophy (Ch. Morren).—A reversion of an apparently constant monstrosity to the normal form of single organs, for example, the development of branches with normal leaves in place of those with cleft leaves. 2. = epistrophe n. 3. ΚΠ 1885 J. Stormonth Man. Sci. Terms 148/1 Epistrophy,..a mode of distribution of protoplasm and chlorophyll granules on free cell-walls under the action of light. 1964 H. I. Virgin in A. C. Giese Photophysiol. I. ix. 283 When a change in displacement takes place between dark position (apostrophy) and low-light position (epistrophy) or between low-light (epistrophy) and strong-light position (parastrophy), the movements occur in a purely statistical manner. This entry has been updated (OED Third Edition, March 2014; most recently modified version published online March 2022). < n.1869 |
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