请输入您要查询的英文单词:

 

单词 ooblast
释义

ooblastn.

Brit. /ˈəʊəblɑːst/, /ˈəʊəblast/, U.S. /ˈoʊoʊˌblæst/
Forms: 1800s– oöblast, 1900s– ooblast.
Origin: A borrowing from German. Etymon: German Ooblast.
Etymology: < German Ooblast (L. Will 1885, in Zeitschr. f. wissenschaftliche Zoologie 41 316) < oo- oo- comb. form + -blast -blast comb. form.
Biology. rare.
= oocyte n.
ΘΚΠ
the world > life > biology > biological processes > procreation or reproduction > reproductive substances or cells > [noun] > ovum or ootid > ovocyte or oogonium
ooblast1885
oogone1889
oocyte1895
oogonium1895
ovocyte1896
secondary oocyte1897
ovogonium1906
1885 Amer. Naturalist 19 616 The central chromatin body of the primitive egg-cell, which he [sc. Will] calls the oöblast, ejects a large number of chromatin pellets from its substance.
1962 Amer. Jrnl. Bot. 49 846/2 There are now formed from the much-enlarged fusion cell 1 to many secondary connecting (secondary oöblast) filaments.
1982 Amer. Jrnl. Bot. 69 318 (table) Means of zygotic nucleus transfer to auxiliary cell... Short ooblast filament.

Derivatives

ooblastic adj. Obsolete rare Apparently only attested in dictionaries or glossaries.
ΚΠ
1890 Cent. Dict. Oöblastic, of or pertaining to oöblasts or budding ova.
This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).
<
n.1885
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:2025/2/1 13:45:04