amniotic sac


Definition of amniotic sac

Examples of amniotic sac in a Sentence

Recent Examples on the Web Chloe, of Mechanicville, N.Y., has Amniotic Band Syndrome, a rare condition that causes strands of the amniotic sac to separate and entangle fingers, toes, limbs and other parts of the fetus, according to Benioff Children’s Hospitals. Rachel Desantis,, "Teen Born Without Leg Donates Hundreds of Barbies with Prosthetic Legs to Local Hospital," 16 Oct. 2019 Other possibilities, the hospital said, include constriction ring syndrome -- when fibers from the amniotic sac wrap themselves around a fetus, causing deformities -- or the umbilical cord becoming wrapped around a fetus' limbs. Matthew Robinson, CNN, "Babies born with deformed hands spark investigation in Germany," 16 Sep. 2019 The amniotic sac had been exposed, and there was a serious risk of infection to the mother and the fetus. Jon Michaud, The New Yorker, "Julius: The Story of a Premature Birth," 15 Aug. 2019 The syndrome is rare; strands of the amniotic sac separate and entangle digits, limbs, or other parts of the developing fetus. Paulina Dedaj, Fox News, "Seattle Seahawks draft one-handed linebacker in the 5th round," 28 Apr. 2018 MacKenzie and her colleagues recruited 89 women with healthy pregnancies and 70 who went into preterm labor because of an early rupture of the amniotic sac—a condition known as preterm premature rupture of membranes. Jennifer Couzin-frankel, Science | AAAS, "Could out-of-whack fetal immune systems prompt preterm labor?," 25 Apr. 2018 At the foot of his deathbed, another monolith looms over his decrepit body, and he is transformed into a fetus in an amniotic sac, hovering over the Earth with his eyes wide open. Brian P. Kelly, WSJ, "‘2001: A Space Odyssey’ at 50: A Quiet Film Still Makes a Big Bang," 6 Apr. 2018 Her algorithm is based on gestational age; maternal risk factors, such as when the amniotic sac ruptured; and the infant's clinical exam. Marla Broadfoot, Science | AAAS, "Too many antibiotics can give preemies a lifetime of ill health," 5 Apr. 2018 When Griffin was in his mother's womb with his twin brother, Seahawks cornerback Shaquil, the amniotic sac wrapped around Shaquem's wrist. Daniel Rapaport,, "How Did Shaquem Griffin Lose His Hand?," 8 Mar. 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'amniotic sac.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of amniotic sac

1831, in the meaning defined above

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The first known use of amniotic sac was in 1831

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Last Updated

11 Nov 2019

Cite this Entry

“Amniotic sac.” The Dictionary, Merriam-Webster Inc., Accessed 5 December 2019.

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amniotic sac


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