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amniocentesis

[am-nee-oh-sen-tee-sis]
noun, plural am·ni·o·cen·te·ses [am-nee-oh-sen-tee-seez] /ˌæm ni oʊ sɛnˈti siz/.
  1. a surgical procedure for obtaining a sample of amniotic fluid from the amniotic sac in the uterus of a pregnant woman by inserting a hollow needle through the abdominal wall, used in diagnosing certain genetic defects or possible obstetric complications.
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Origin of amniocentesis

1955–60; amnio- (as combining form of amnion) + centesis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for amniocentesis

amniocentesis

noun plural -ses (-siːz)
  1. removal of some amniotic fluid by the insertion into the womb of a hollow needle, for therapeutic or diagnostic purposes
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Word Origin for amniocentesis

C20: from amnion + centesis, from Greek kentēsis a puncture, from kentein to prick
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for amniocentesis

n.

1958, Modern Latin, from amnion (see amniotic) + centesis "surgical puncture," from Greek kentesis "a pricking," from kentein "to prick," related to kontos "pole" (see center (n.)).

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Online Etymology Dictionary, © 2010 Douglas Harper

amniocentesis in Medicine

amniocentesis

(ăm′nē-ō-sĕn-tēsĭs)
n. pl. am•ni•o•cen•te•ses (-sēz′)
  1. A procedure in which a small sample of amniotic fluid is drawn out of the uterus through a needle inserted in the abdomen and is then analyzed to detect genetic abnormalities in the fetus or to determine the sex of the fetus.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

amniocentesis in Science

amniocentesis

[ăm′nē-ō-sĕn-tēsĭs]
  1. A procedure usually done about the sixteenth week of pregnancy in which a small sample of amniotic fluid is drawn out of the uterus through a needle inserted in the abdomen. The fluid is analyzed to determine the gender of the fetus or the presence of genetic abnormalities.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

amniocentesis in Culture

amniocentesis

[(am-nee-oh-sen-tee-sis)]

A procedure for finding certain disorders in a fetus during pregnancy. In amniocentesis, a small amount of the salty liquid that surrounds the fetus in the amniotic sac is drawn out through a needle inserted into the mother's abdomen. The fluid generally contains some isolated cells from the fetus. These cells are analyzed to detect abnormalities in the chromosomes of the fetus, such as Down's syndrome, and may also be used to judge some other conditions, such as the maturity of the fetus's lungs.

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The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.