noun, plural am·ni·ons, am·ni·a [am-nee-uh] /ˈæm ni ə/.
Origin of amnion
Examples from the Web for amnion
A very early condition of Man, with yelk-sac, allantois, and amnion (original).Lectures and Essays|T.H. Huxley
The embryo thus enclosed in the egg finds its protection in the fact that it is encased in a fluid contained in the amnion.The Meaning of Evolution|Samuel Christian Schmucker
This second fold gives rise to the amnion, and is limited entirely to the somatopleure.The Works of Francis Maitland Balfour, Volume III (of 4)|Francis Maitland Balfour
The amnion forms a small fold covering over the cephalic extremity of the embryo, which is deeply embedded in the yolk.The Works of Francis Maitland Balfour, Volume 1|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
British Dictionary definitions for amnion
noun plural -nions or -nia (-nɪə)
Word Origin for amnion
Word Origin and History for amnion
1660s, Modern Latin, from Greek amnion "membrane around a fetus," said to be originally "bowl in which the blood of victims was caught" [Liddell & Scott], which is variously said to be of unknown origin, from ame "bucket," or a diminutive of amnos "lamb."