Amniotic fluid

the watery fluid in the amnion, in which the embryo is suspended.
Contemporary Examples

Chronic uncertainty surrounds children living under occupation like amniotic fluid.
More on Palestinian Children Emily L. Hauser July 26, 2012

Historical Examples

The constant presence of nutritive substances in the amniotic fluid during the whole period of gestation.
Simon Magus George Robert Stow Mead

A special coat for confinement purposes, stained with blood and amniotic fluid, is liable to convey infection.
A System of Practical Medicine by American Authors, Vol. I Various

noun
the fluid surrounding the fetus in the womb

amniotic fluid n.
The fluid within the amnion that surrounds the fetus and protects it from injury.
amniotic fluid
(ām’nē-ŏt’ĭk)
The watery fluid within the amnion that surrounds the fetus. Amniotic fluid cushions the fetus from injury, allows movement, and helps to stabilize temperature. The composition of the fluid changes over the course of gestation. Initially, amniotic fluid is similar to maternal plasma. As the fetus develops, phospholipids originating from the lungs, fetal cells, lanugo, and urine are deposited in the fluid.
amniotic fluid [(am-nee-ot-ik)]

The fluid, resembling salt water, contained in the amniotic sac; the embryo or fetus floats in the amniotic fluid.