View synonyms for amnion

amnion

[ am-nee-uhn ]

Phonetic (Standard)IPA

noun

, plural am·ni·ons, am·ni·a [am, -nee-, uh].

Anatomy, Zoology. the innermost of the embryonic or fetal membranes of reptiles, birds, and mammals; the sac in which the embryo is suspended.
Zoology. a similar membrane of insects and other invertebrates.

amnion

/ ˈæmnɪən /

See chorion
the innermost of two membranes enclosing an embryonic reptile, bird, or mammal See also chorion

amnion

/ ăm′nē-ən /

A thin, membranous sac filled with a watery fluid (called the amniotic fluid ) in which the embryo or fetus of a reptile, bird, or mammal is suspended during prenatal development.
Also called amniotic sac

Origin of amnion¹

1660–70; < Greek, equivalent to amn ( ós ) lamb ( yean ) + -ion diminutive suffix

Origin of amnion¹

C17: via New Latin from Greek: a little lamb, from amnos a lamb

Between these is a gelatinous substance, and within the amnion is a fluid, called the liquor amnii.

The whole being surrounded by two membranous coverings, the outer one called the chorion, and the inner one the amnion.

The amnion forms a small fold covering over the cephalic extremity of the embryo, which is deeply embedded in the yolk.

Both it and the stalk of the yolk-sack are enveloped by the amnion (am).

It adheres to the amnion and supplies it with blood-vessels (Bischoff).

April 20, 2024flabbergast

[flab-er-gast ]

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