| English Dictionary |
CHORION
| Pronunciation (US): |  | (GB): | |
Dictionary entry overview: What does chorion mean?
• CHORION (noun)
The noun CHORION has 1 sense:
1. the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
Familiarity information: CHORION used as a noun is very rare.
Dictionary entry details
Sense 1
Meaning:
The outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
Classified under:
Nouns denoting animals
Hypernyms ("chorion" is a kind of...):
sac (a structure resembling a bag in an animal)
Meronyms (parts of "chorion"):
chorionic villus (one of the tiny villi that stick out of the fetal chorion and combine with the mother's uterine tissue to form the placenta)
Domain category:
mammal; mammalian (any warm-blooded vertebrate having the skin more or less covered with hair; young are born alive except for the small subclass of monotremes and nourished with milk)
Holonyms ("chorion" is a part of...):
amniote (any member of the Amniota)
fetal membrane (any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus)
Derivation:
chorionic (of or relating to a chorion)
Context examples
Inflammation of the fetal sac membranes that is characterized by neutrophilic infiltration of the amnion and chorion.
(Histologic Chorioamnionitis, NCI Thesaurus)
It is characterized by neutrophilic infiltration of the amnion and chorion.
(Chorioamnionitis, NCI Thesaurus)
An inflammatory process involving the chorion, its fetal blood vessels, the umbilical cord, and the amnion by extension of the inflammation, as the amnion itself has no blood supply.
(Chorioamnionitis, NLM, Medical Subject Headings)
A pregnancy involving two fetuses that share both the chorion and amniotic sac.
(Monochorionic Monoamniotic Twin Pregnancy, NCI Thesaurus)
A pregnancy involving two fetuses that each have separate chorions and amniotic sacs.
(Dichorionic Diamniotic Twin Pregnancy, NCI Thesaurus)
A pregnancy involving two fetuses that share the same chorion but have separate amniotic sacs.
(Monochorionic Diamniotic Twin Pregnancy, NCI Thesaurus)
| Learn English with... Proverbs |
"Do not hide like a fly under the tail of a horse." (Albanian proverb)
"When you are dead, your sister's tears will dry as time goes on, your widow's tears will cease in another's arms, but your mother will mourn you until she dies." (Arabic proverb)
"Homes among homes and grapevines among grapevines." (Corsican proverb)