chorion

n. 绒毛膜, 浆膜, 卵壳 [医] 绒[毛]膜

发音

其它 /ˈkɔɹiɑn/

词形变化

choria chorions 复数 chorions choria 复数

释义与例句

n.
  1. 1.

    The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.

    医学 生物

    2002, Rovert E. A. Stewart, Barbara E. Stewart, Female Reproductive Systems, entry in Encyclopedia of Marine Mammals, page 425, The allantois fuses with the chorion, forming a small round area, the allentochorion. This region becomes the placenta (Fig. 3).

  2. 2.

    The outer case of an insect egg.

    生物 动物学

    2008, John L. Capinera, Eggs of Insects, entry in John L. Capinera (editor), Encyclopedia of Entomology, page 1290, In addition to facilitating gas exchange and water conservation, the chorion must, in some cases, allow uptake of water or liquid nutrients from the environment.

  3. 3.

    The outer membrane of seeds of plants.

    生物 植物学

词汇关系

名词

上位词 1

sac

整体词 1

amniote

词源

From Late Latin chorion, from Ancient Greek χόριον (khórion, “membrane surrounding the fetus, afterbirth”).

来源：wiktionary