请输入您要查询的英文单词:

 

单词 orthospermous
释义

orthospermousadj.

Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: ortho- comb. form, -spermous comb. form.
Etymology: < ortho- comb. form + -spermous comb. form, after scientific Latin Orthospermae, former suborder name (A. de Candolle Mem. sur la Famille des Ombelliféres (1829) 17). Compare French Orthospermées, plural (1829 in the same source). N.E.D. (1903) gives the pronunciation as (ǭɹþospə̄·ɹməs) /ɔːθəʊˈspɜːməs/.
Botany. Obsolete.
Of certain plants of the family Apiaceae ( Umbelliferae): having carpels with the albumen flat on the inner face; (of a carpel) having the albumen distributed in this way. Cf. campylospermous adj., cœlospermous adj.
ΘΚΠ
the world > plants > part of plant > reproductive part(s) > seed > [adjective] > of specific shape
subround1779
orthospermous1836
1836 J. Lindley Nat. Syst. Bot. (ed. 2) 22 The classification of de Candolle [sc. of the Umbelliferae] has..been attacked by Tausch..who asserts that the albumen is a fallacious guide. He says that some species of Bupleurum are campylospermous, and others orthospermous... He adds, that in Hasselquistia the fruit of the ray is orthospermous, while that of the disk is cœlospermous.
1859 C. Darwin Origin of Species v. 146 In the Umbelliferæ..the seeds being..orthospermous in the exterior flowers and cœlospermous in the central flowers.
1866 J. Lindley & T. Moore Treasury Bot. II. 1140 Thaspium, a genus of North American orthospermous Umbelliferæ... Its popular American name is Meadow Parsnip.
This entry has been updated (OED Third Edition, September 2004; most recently modified version published online March 2022).
<
adj.1836
随便看

 

英语词典包含1132095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。

 

Copyright © 2004-2022 Newdu.com All Rights Reserved
更新时间:2025/3/16 5:38:37