chorion

[ kawr-ee-on, kohr- ]

/ ˈkɔr iˌɒn, ˈkoʊr- /

noun

Embryology. the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals.

Zoology. the membrane around the eggs of certain insects, secreted by cells of the ovary.

Origin of chorion

1535–45; <New Latin <Greek chórion membrane enclosing the fetus

OTHER WORDS FROM chorion

cho·ri·on·ic, cho·ri·al, adjectivesub·cho·ri·on·ic, adjective

Words nearby chorion

chorioepithelioma, chorioid, chorioido-, chorioma, choriomeningitis, chorion, chorionic epithelioma, chorionic gonadotrophin, chorionic gonadotropin, chorionic growth hormone-prolactin, chorionic villus

Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for chorion

The follicle cells soon become larger and give rise to an envelope round the egg of the nature of a chorion.
The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour
From the chorion there grow out numerous vascular villi, which fit into corresponding pits in the uterine walls.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The chorion is often ornamented with various processes, etc.
The Works of Francis Maitland Balfour, Volume II (of 4)|Francis Maitland Balfour
They are the chorion and the amnion; besides which, there are two others that require notice, viz.
A System of Midwifery|Edward Rigby

These septa, which belong to the serotina, lie between the arborescent villi of the chorion.
The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour

British Dictionary definitions for chorion

chorion

/ (ˈkɔːrɪən) /

noun

the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammalsSee also amnion

Derived forms of chorion

chorionic or chorial, adjective

Word Origin for chorion

C16: from Greek khorion afterbirth

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for chorion

chorion

[ 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.

Other words from chorion

cho′ri•on′ic (-ŏn′ĭk) adj.

Scientific definitions for chorion

chorion

[ 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.

单词	chorion
释义	chorion [ kawr-ee-on, kohr- ] / ˈkɔr iˌɒn, ˈkoʊr- / noun Embryology. the outermost of the extraembryonic membranes of land vertebrates, contributing to the formation of the placenta in the placental mammals. Zoology. the membrane around the eggs of certain insects, secreted by cells of the ovary. Origin of chorion 1535–45; <New Latin <Greek chórion membrane enclosing the fetus OTHER WORDS FROM chorion cho·ri·on·ic, cho·ri·al, adjectivesub·cho·ri·on·ic, adjective Words nearby chorion chorioepithelioma, chorioid, chorioido-, chorioma, choriomeningitis, chorion, chorionic epithelioma, chorionic gonadotrophin, chorionic gonadotropin, chorionic growth hormone-prolactin, chorionic villus Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 Example sentences from the Web for chorion The follicle cells soon become larger and give rise to an envelope round the egg of the nature of a chorion. The Works of Francis Maitland Balfour, Volume II (of 4)\|Francis Maitland Balfour From the chorion there grow out numerous vascular villi, which fit into corresponding pits in the uterine walls. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour The chorion is often ornamented with various processes, etc. The Works of Francis Maitland Balfour, Volume II (of 4)\|Francis Maitland Balfour They are the chorion and the amnion; besides which, there are two others that require notice, viz. A System of Midwifery\|Edward Rigby These septa, which belong to the serotina, lie between the arborescent villi of the chorion. The Works of Francis Maitland Balfour, Volume III (of 4)\|Francis Maitland Balfour British Dictionary definitions for chorion chorion / (ˈkɔːrɪən) / noun the outer of two membranes that form a sac around the embryonic reptile, bird, or mammal: contributes to the placenta in mammalsSee also amnion Derived forms of chorion chorionic or chorial, adjective Word Origin for chorion C16: from Greek khorion afterbirth Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Medical definitions for chorion chorion [ 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. Other words from chorion cho′ri•on′ic (-ŏn′ĭk) adj. The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company. Scientific definitions for chorion chorion [ 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. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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