chorion

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Related to chorion laeve: decidua capsularis, chorion frondosum

cho·ri·on

 (kôr′ē-ŏn′)
n.
The outer membrane enclosing the embryo in reptiles, birds, and mammals. In placental mammals it contributes to the development of the placenta.

[Greek khorion; see gherə- in Indo-European roots.]

cho′ri·on′ic (-ŏn′ĭk) adj.

chorion

(ˈkɔːrɪən)
n
(Anatomy) 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
[C16: from Greek khorion afterbirth]
ˌchoriˈonic, ˈchorial adj

cho•ri•on

(ˈkɔr iˌɒn, ˈkoʊr-)

n.
1. the outermost of the membranes enclosing the embryo in reptiles, birds, and mammals, developing into part of the eggshell or part of the placenta.
2. a membrane enclosing the shell of an insect egg.
[1535–45; < Greek chórion afterbirth]
cho`ri•on′ic, cho′ri•al, adj.

cho·ri·on

(kôr′ē-ŏn′)
The outer membrane that encloses the embryo of a reptile, bird, or mammal. In mammals, the chorion contributes to the development of the placenta.

chorion

The embryo’s outer membrane, which helps to form the placenta.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chorion - the outermost membranous sac enclosing the embryo in higher vertebrates (reptiles, birds and mammals)
amniote - any member of the Amniota
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
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
fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
sac - a structure resembling a bag in an animal
Translations

cho·ri·on

n. corión, una de las dos membranas que rodean al feto.
References in periodicals archive ?
In addition to convoluted outlines of chorionic villi, villous trophoblastic pseudoinclusions, and clusters of villous cytotrophoblasts, the previously unreported focal pseudovillous papilliform trophoblastic proliferation of the undersurface of the chorionic plate and clustering of perpendicularly oriented sclerotic chorionic villi in the chorion laeve were observed in this double trisomy case.
Perpendicularly oriented clusters of sclerotic chorionic villi are present in the chorion laeve [(g) magnification x100, H&E].
A natural process of cell death, apoptosis, was more common in the chorion laeve of women with chorioamnionitis than in chorions taken from control women without chorioamnionitis, Dr.