Definitions for amnion
ˈæm ni ən; -ni əam·nion

Princeton's WordNetRate this definition:0.0 / 0 votes

1. amnion, amniotic sac, amniosnoun

   thin innermost membranous sac enclosing the developing embryo of higher vertebrates (reptiles, birds and mammals)

WiktionaryRate this definition:5.0 / 1 vote

1. amnionnoun

   the innermost membrane of the fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.

2. Etymology: From for "membrane around a fetus", from Greek "bowl in which the blood of victims was caught", from ame, (bucket)

Samuel Johnson's DictionaryRate this definition:0.0 / 0 votes

1. AMNION, AMNIOSnoun

   The innermost membrane with which the fœtus in the womb is most immediately covered, and with which the rest of the secundines, the chorion, and alantois, are ejected after birth. It is whiter and thinner than the chorion. It also contains a nutritious humour, separated by glands for that purpose, with which the fœtus is preserved. It is outwardly cloathed with the urinary membrane, and the chorion, which sometimes stick so close to one another, that they can scarce be separated. It has also its vessels from the same origin as the chorion. John Quincy

   Etymology: Lat. perhaps from ἄμνος.

WikipediaRate this definition:0.0 / 0 votes

1. Amnion

   The amnion is a membrane that closely covers the human and various other embryos when first formed. It fills with amniotic fluid, which causes the amnion to expand and become the amniotic sac that provides a protective environment for the developing embryo. The amnion, along with the chorion, the yolk sac and the allantois protect the embryo. In birds, reptiles and monotremes, the protective sac is enclosed in a shell. In marsupials and placental mammals, it is enclosed in a uterus. The term is from Ancient Greek ἀμνίον 'little lamb', diminutive of ἀμνός 'lamb'. it is cognate with the English verb 'yean', bring forth young (usually lambs). The amnion is a feature of the vertebrate clade Amniota, which includes reptiles, birds, and mammals. Amphibians and fish are not amniotes and thus lack the amnion. The amnion stems from the extra-embryonic somatic mesoderm on the outer side and the extra-embryonic ectoderm or trophoblast on the inner side.

ChatGPTRate this definition:0.0 / 0 votes

1. amnion

   The amnion is a thin membrane forming a closed sac around the embryos or fetuses of mammals, birds, and reptiles, which contains the amniotic fluid. It is one of the several membranes where the embryo of these animals develops. Essentially, it serves as a protective barrier against physical impacts, infection, and temperature variations, and aids in the regulation of physiological homeostasis for the developing organism.

Webster DictionaryRate this definition:0.0 / 0 votes

1. Amnionnoun

   a thin membrane surrounding the embryos of mammals, birds, and reptiles

2. Etymology: [Gr. the membrane round the fetus, dim. of lamb.]

WikidataRate this definition:0.0 / 0 votes

1. Amnion

   The amnion is a membrane building the amniotic sac that surrounds and protects an embryo. It is developed in reptiles, birds, and mammals, which are hence called “Amniota”; but not in amphibians and fish, which are consequently termed “Anamniota”. The primary role of this is the protection of the embryo for its development. It stems from the extraembryonic somatic mesoderm on the outer side and the extraembryonic ectoderm on the inner side.

Chambers 20th Century DictionaryRate this definition:0.0 / 0 votes

1. Amnion

   am′ni-on, n. the innermost membrane enveloping the embryo of reptiles, birds, and mammals. [Gr.—amnos, a lamb.]

The Nuttall EncyclopediaRate this definition:0.0 / 0 votes

1. Amnion

   name given to the innermost membrane investing the foetus in the womb.

U.S. National Library of MedicineRate this definition:0.0 / 0 votes

1. Amnion

   The innermost membranous sac that surrounds and protects the developing embryo which is bathed in the AMNIOTIC FLUID. Amnion cells are secretory EPITHELIAL CELLS and contribute to the amniotic fluid.

EntomologyRate this definition:0.0 / 0 votes

1. Amnion

   the inner of the two membranes enveloping the embryo.

Usage in printed sourcesFrom: 

1. [["1644","1"],["1740","7"],["1747","2"],["1750","6"],["1759","16"],["1763","5"],["1764","2"],["1766","1"],["1772","1"],["1773","1"],["1775","5"],["1778","2"],["1781","7"],["1784","13"],["1785","9"],["1786","4"],["1787","12"],["1788","2"],["1793","1"],["1794","63"],["1796","25"],["1798","1"],["1799","2"],["1800","31"],["1801","7"],["1802","4"],["1803","28"],["1804","18"],["1805","2"],["1806","2"],["1807","11"],["1808","16"],["1809","60"],["1810","5"],["1811","28"],["1812","6"],["1813","16"],["1814","13"],["1815","14"],["1816","20"],["1817","44"],["1818","83"],["1819","41"],["1820","10"],["1821","9"],["1822","43"],["1823","25"],["1824","23"],["1825","73"],["1826","22"],["1827","31"],["1828","33"],["1829","49"],["1830","13"],["1831","42"],["1832","67"],["1833","37"],["1834","86"],["1835","10"],["1836","57"],["1837","104"],["1838","42"],["1839","51"],["1840","42"],["1841","148"],["1842","130"],["1843","144"],["1844","320"],["1845","84"],["1846","61"],["1847","80"],["1848","79"],["1849","87"],["1850","123"],["1851","139"],["1852","129"],["1853","197"],["1854","196"],["1855","121"],["1856","280"],["1857","221"],["1858","257"],["1859","210"],["1860","171"],["1861","141"],["1862","117"],["1863","144"],["1864","191"],["1865","100"],["1866","119"],["1867","181"],["1868","194"],["1869","155"],["1870","159"],["1871","250"],["1872","178"],["1873","469"],["1874","669"],["1875","336"],["1876","679"],["1877","314"],["1878","617"],["1879","656"],["1880","674"],["1881","1137"],["1882","400"],["1883","1293"],["1884","702"],["1885","1246"],["1886","558"],["1887","893"],["1888","598"],["1889","637"],["1890","333"],["1891","687"],["1892","1640"],["1893","911"],["1894","506"],["1895","678"],["1896","699"],["1897","1227"],["1898","789"],["1899","1454"],["1900","654"],["1901","1344"],["1902","1033"],["1903","1159"],["1904","880"],["1905","991"],["1906","588"],["1907","795"],["1908","978"],["1909","799"],["1910","1324"],["1911","410"],["1912","1167"],["1913","1321"],["1914","313"],["1915","819"],["1916","867"],["1917","708"],["1918","437"],["1919","289"],["1920","555"],["1921","509"],["1922","431"],["1923","350"],["1924","324"],["1925","526"],["1926","244"],["1927","425"],["1928","304"],["1929","399"],["1930","700"],["1931","695"],["1932","162"],["1933","304"],["1934","455"],["1935","346"],["1936","345"],["1937","674"],["1938","365"],["1939","350"],["1940","574"],["1941","977"],["1942","854"],["1943","300"],["1944","216"],["1945","477"],["1946","870"],["1947","317"],["1948","635"],["1949","892"],["1950","412"],["1951","763"],["1952","863"],["1953","521"],["1954","636"],["1955","367"],["1956","738"],["1957","672"],["1958","841"],["1959","648"],["1960","1137"],["1961","993"],["1962","1750"],["1963","1291"],["1964","1352"],["1965","1240"],["1966","1409"],["1967","1356"],["1968","2025"],["1969","1455"],["1970","1395"],["1971","1509"],["1972","1955"],["1973","1674"],["1974","1633"],["1975","1429"],["1976","1350"],["1977","1279"],["1978","1208"],["1979","1034"],["1980","1337"],["1981","1352"],["1982","1579"],["1983","1281"],["1984","1710"],["1985","1837"],["1986","1440"],["1987","1799"],["1988","1630"],["1989","1847"],["1990","2388"],["1991","1637"],["1992","2083"],["1993","1895"],["1994","2306"],["1995","2351"],["1996","1526"],["1997","1996"],["1998","2598"],["1999","1987"],["2000","2283"],["2001","2171"],["2002","1798"],["2003","2276"],["2004","2522"],["2005","2776"],["2006","2401"],["2007","2981"],["2008","2485"]]

Anagrams for amnion »

1. Minoan

2. nomina

How to pronounce amnion?

1. Alex

   US English

   David

   US English

   Mark

   US English

   Daniel

   British

   Libby

   British

   Mia

   British

   Karen

   Australian

   Hayley

   Australian

   Natasha

   Australian

   Veena

   Indian

   Priya

   Indian

   Neerja

   Indian

   Zira

   US English

   Oliver

   British

   Wendy

   British

   Fred

   US English

   Tessa

   South African

How to say amnion in sign language?

Numerology

1. Chaldean Numerology

   The numerical value of amnion in Chaldean Numerology is: 5

2. Pythagorean Numerology

   The numerical value of amnion in Pythagorean Numerology is: 3

Popularity rank by frequency of use

References

1. ^ Princeton's WordNet
   http://wordnetweb.princeton.edu/perl/webwn?s=amnion
2. ^ Wiktionary
   https://en.wiktionary.org/wiki/Amnion
3. ^ Samuel Johnson's Dictionary
   https://johnsonsdictionaryonline.com/views/search.php?term=amnion
4. ^ Wikipedia
   https://en.wikipedia.org/wiki/Amnion
5. ^ ChatGPT
   https://chat.openai.com
6. ^ Webster Dictionary
   https://www.merriam-webster.com/dictionary/amnion
7. ^ Wikidata
   https://www.wikidata.org/w/index.php?search=amnion
8. ^ Chambers 20th Century Dictionary
   https://www.gutenberg.org/files/37683/37683-h/37683-h.htm#:~:text=amnion
9. ^ The Nuttall Encyclopedia
   https://www.gutenberg.org/cache/epub/12342/pg12342-images.html#Amnion
10. ^ Entomology
    https://www.gutenberg.org/files/22748/22748-h/22748-h.htm#:~:text=amnion
11. ^ Usage in printed sources
    https://books.google.com/ngrams/graph?content=amnion