chorion

名词 n.
中文释义

英文释义

名词 n.
  1. The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.
    — 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. The outer case of an insect egg.
    — The chorion has a predominantly lamellar structure, the lamellae being two-dimensional networks of protein fibrils.
  3. The outer membrane of seeds of plants.

词形变化

chorions plural choria plural

词汇关系

衍生词
amniochorion chorial chorio- chorion frondosum chorionic chorionitis chorion laeve dechorionated dechorionicated dichorion dichorionic endochorion exochorion extrachorion monochorionic monochorionic twin phytochorion subchorionic
并列词
amnion amnio- placenta placento-

词源

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