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单词 extrorse
释义

extrorseadj.

/ɛkˈstrɔːs/
Etymology: < French extrorse, < Latin extrorsus in an outward direction, < extrā adverb (see extra adj., adv., and n.) + versus towards.
Botany.
(See quots.)
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > flower or part containing reproductive organs > [adjective] > having or relating to parts > having particular form, position, or mode of growth
accrescent1836
extrorse1850
posticous1866
anticous1870
concrescent1902
1850 A. Gray Bot. Text-bk. (ed. 3) i. x. 292 When the anther looks away from the pistils and towards the petals..it is said to be extrorse, or turned outwards.
1861 R. Bentley Man. Bot. i. iv. 247 The anther..is said to be extrorse.
1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 557 The anthers open inwards towards the gynæceum (introrse), or outwards (extrorse).
This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2018).
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adj.1850
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