请输入您要查询的英文单词:

 

单词 properistoma
释义

properistoman.

Forms: 1800s properistoma, 1800s properistome.
Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: pro- prefix2, peri- prefix, stoma n.
Etymology: < pro- prefix2 + peri- prefix + stoma n., after German Properistoma (1877 in the source translated in quot. 1879). Compare earlier (in different sense) peristoma n.
Embryology. Obsolete. rare.
In Haeckel's terminology: the edge of the primitive mouth (blastopore) of a gastrula.
ΚΠ
1879 tr. E. Haeckel Evol. Man I. viii. 220 At the thickened edges of the gastrula, the primitive mouth-edge (properistoma), the endoderm, and the exoderm pass into each other.
1890 Cent. Dict. Properistome, same as properistoma.

Derivatives

properistomal adj. Obsolete rare Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Properistomal, pertaining to a properistoma.
This entry has been updated (OED Third Edition, June 2007; most recently modified version published online June 2021).
<
n.1879
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:2024/12/23 21:47:42