\kˈɔːɹi͡ən], \kˈɔːɹiən], \k_ˈɔː_ɹ_iə_n]\
Definitions of CHORION
- 2010 - New Age Dictionary Database
- 1913 - Webster's Revised Unabridged Dictionary
- 2010 - Medical Dictionary Database
- 1920 - A practical medical dictionary.
- 1898 - Warner's pocket medical dictionary of today.
- 1914 - Nuttall's Standard dictionary of the English language
- 1874 - Etymological and pronouncing dictionary of the English language
- 1920 - A dictionary of scientific terms.
- 1846 - Medical lexicon: a dictionary of medical science
- 1898 - American pocket medical dictionary
- 1916 - Appleton's medical dictionary
- 1790 - A Complete Dictionary of the English Language
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By Oddity Software
By Noah Webster.
By Stedman, Thomas Lathrop
By William R. Warner
By Nuttall, P.Austin.
By Stormonth, James, Phelp, P. H.
By Henderson, I. F.; Henderson, W. D.
A thin, transparent membrane, formerly confounded with the decidua, which surrounds the foetus in -utero on every side, and appears to be developed from nucleated cells formed in the Fallopian tube. Some histologists, however, consider, that it exists in the ovary. The general opinion is, that it is formed as above described; and perhaps, also, from the zona pellucida, which disappears in the tube. In the uterus, villous prolongations are formed on its surface, which have given it, with more recent writers, the name 'shaggy chorion.' These villi are probably the agents of the absorption of nutritive matter furnished from the lining membrane of the uterus. By many anatomists, the chorion is considered to be formed of two layers; the outer, called by Burdach Exocho'rion: the inner, Endocho'rion. By others, the distinction of laminae is denied. It is exterior to the amnion.
By Robley Dunglison
By Willam Alexander Newman Dorland
The external layer of the blastoderm; the outer enveloping membrane of the fecundated ovum, most characteristically developed in the human subject, being observed as soon as the ovum has entered the cavity of the uterus, and persisting through the whole period of gestation. A part of it takes a share in the development of the fetal portion of the placenta, and the remainder constitutes the outermost of the fetal envelopes.
By Smith Ely Jelliffe
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