请输入您要查询的英文单词：

　

单词 chorial
释义

WordReference Random House Unabridged Dictionary of American English © 2024
cho•ri•on  (kôr′ē on′, kōr′-),USA pronunciation n. 
  1. Developmental Biology[Embryol.]the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.
  2. [Zool.]the membrane around the eggs of certain insects, secreted by cells of the ovary.
  • Greek chórion membrane enclosing the fetus
  • Neo-Latin
  • 1535–45
cho′ri•on′ic, cho′ri•al, adj. 

Collins Concise English Dictionary © HarperCollins Publishers::
chorion /ˈkɔːrɪən/ n
  1. the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammals
    See also amnion
Etymology: 16th Century: from Greek khorion afterbirth

ˌchoriˈonic, ˈchorial adj
随便看

　

英语词典包含188688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：2024/11/11 0:33:07