Word.ws English Dictionary

chorions

chorions is the plural of chorion.

Meaning of chorion

Noun

chorion (plural chorions or choria)

  1. The protective and nutritive membrane in higher vertebrates that attaches the fetus to the uterus.
    • The allantois fuses with the chorion, forming a small round area, the allentochorion. This region becomes the placenta (Fig. 3).2002, Rovert E. A. Stewart, Barbara E. Stewart, Female Reproductive Systems, entry in Encyclopedia of Marine Mammals, page 425
  2. The outer case of an insect egg.
    • The chorion has a predominantly lamellar structure, the lamellae being two-dimensional networks of protein fibrils.1994, Klaus Urich, Comparative Animal Biochemistry, page 392
  3. The outer membrane of seeds of plants.

Questions about chorions

What is chorions the plural of?
Chorions is the plural of chorion.

Words near chorions in the dictionary

  1. chorionic villus sampling
  2. chorionic villus samplings
  3. chorionicity
  4. chorionitis
  5. chorionity
  6. chorions
  7. chorioplacental
  8. chorioptic
  9. chorioretinal
  10. chorioretinitis
  11. chorioretinopathies

Source and license

Adapted from Wiktionary: chorions (page history and authors); chorion (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “chorions.” Word.ws, https://word.ws/chorions. Based on Wiktionary, CC BY-SA 4.0.