请输入您要查询的英文单词:

 

单词 gastrula
释义 gas·tru·la
\ˈgastrələ\ noun
(plural gastrulas \-ləz\ ; or gastru·lae \-ˌlē, -ˌlī\)
Etymology: New Latin, from gastr + Latin -ula (feminine diminutive suffix)
: an early metazoan embryo consisting of a hollow 2-layered cellular cup made up of an outer epiblast and an inner hypoblast that meet along the marginal line of a blastopore and jointly enclose the archenteron, forming typically by invagination of part of the blastula wall or in many yolk-filled eggs by overgrowth of cells formed about the animal pole and epiboly, and in eggs producing discoblastulas and in mammalian eggs being greatly modified in both organization and course of formation — see delamination, involution; compare blastula, morula
gas·tru·lar \-lə(r)\ adjective
随便看

 

英语词典包含332784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:2025/3/17 17:23:25