单词 | perennation |
释义 | perennationn. Botany. Continued survival of a plant or plant part through one or more winters or dry seasons. Also figurative. ΘΚΠ the world > plants > by age or cycles > [noun] > perennial > condition of being perennation1888 perpetualism1931 1888 I. B. Balfour in Nature 20 Dec. 188/2 Properly to understand perennation, the perennating portions must be examined at all periods of the resting season. 1915 P. Geddes Cities in Evol. 372 It is of the very essence of our growing sociological re-interpretation of the past..to maintain the perennation of culture, the immortality of the social soul. 1946 A. Nelson Princ. Agric. Bot. iv. 85 The stem tuber..is the apical region of an underground stem swollen with food for propagation and perennation. 1999 Amer. Midland Naturalist 141 388 Shoot emergence..in early spring gives plants a long growing season..to accumulate storage materials for perennation and reproduction. This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022). < n.1888 |
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