bag of waters

American  

noun

1. a fluid-filled membranous sac in the pregnant uterus that encloses and cushions the fetus, normally breaking at or just before the time of birth; the amnion.

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Etymology

Origin of bag of waters

First recorded in 1880–85

Example Sentences

See Examples For:

bag of waters

That membrane forms a complete bag over the fetus; this bag becomes filled with liquid, so that the fetus floats freely in a bag of waters; this bag bursts only during childbirth.

From Woman Her Sex and Love Life by Robinson, William J.

And now if the pains are returning every three to five minutes or if the bag of waters has broken, the patient should go to bed.

From The Mother and Her Child by Sadler, William S.

For some women, the bag of waters breaks before labor begins or perhaps as the first sign of its beginning.

From Emergency Childbirth A Reference Guide for Students of the Medical Self-help Training Course, Lesson No. 11 by United States. Office of Civil Defense

Wood reports a case in which there was expulsion of a bag of waters before the rupture of the membranes.

From Anomalies and Curiosities of Medicine by Pyle, Walter L. (Walter Lytle)

The bag of waters should rupture normally while it is being pushed through the external opening.

From Herself Talks with Women Concerning Themselves by Lowry, Edith B. (Edith Belle)