from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A procedure in which a small sample of amniotic fluid is drawn out of the uterus through a needle inserted in the abdomen. The fluid is then analyzed to detect genetic abnormalities in the fetus or to determine the sex of the fetus.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A procedure for obtaining amniotic fluid from a pregnant animal, by inserting a hollow needle through the abdominal wall and into the amniotic sac. Used in diagnosing possible genetic defects and/or obstetric complications.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. (pregnancy) extraction by centesis of amniotic fluid from a pregnant woman (after the 15th week of pregnancy) to aid in the diagnosis of fetal abnormalities


New Latin amniocentēsis : amnion + Greek kentēsis, act of pricking (from kentein, to prick; see kent- in Indo-European roots).
(American Heritage® Dictionary of the English Language, Fourth Edition)
From amnio(n) +‎ -centesis. (Wiktionary)


  • A genetic amniocentesis is recommended in the evaluation of possible TTTS to confirm same sex status and to rule out chromosome abnormalities and fetal infection.

    Twin-Twin Transfusion Syndrome (TTTS)

  • One area Dr. Tita says he'd like to explore further is whether late-term amniocentesis, currently used to determine respiratory health in a fetus, could be used more widely to sort out which deliveries carry the most risks and which ones could, indeed, be performed before 39 weeks.

    The Globe and Mail - Home RSS feed

  • No one expects such tests to immediately replace amniocentesis, which is considered the gold standard for acquiring definitive genetic information and is performed around 200,000 times a year in the U.S. alone.

    New Prenatal Tests Offer Safer, Early Screenings

  • Pregnant women often opt for a prenatal test called amniocentesis that requires a needle to be inserted through the walls of the abdomen and uterus to draw a sample of the fluid surrounding the fetus.

    New Prenatal Tests Offer Safer, Early Screenings

  • Usually it's the needle procedure Witkowski had, called amniocentesis, done almost four months or more into the pregnancy.

    Comfort or conflict: Earlier Down syndrome test

  • This paper was rushed into print in order to establish priority for this fundamental discovery, which helped lay the foundation for the prenatal diagnostic technique called amniocentesis and the discipline called medical genetics.

    Mathilde Krim.

  • It seems that ACOG (The American College of OB/GYN's) you know, your friendly OB who gives pregnant women 25 mcg of mercury in that flu shot, is now offering a screening for Down syndrome to all women of any age - not just via amniocentesis, which is typically used only in women over age 35.

    Kim Stagliano: The Appalled Voice of An Autism Mom

  • For a long time, the only test that you could really use to test for this was an amniocentesis, which is putting a needle actually into the amniotic sack and taking some fluid out.

    CNN Transcript Jan 2, 2007

  • One thing to point out, this is still a screening test, as opposed to an amniocentesis, which is a diagnostic test.

    CNN Transcript Jan 2, 2007

  • Experts are now calling for a debate on the consequences of the screening process, called amniocentesis, which is already used to detect Down's syndrome in unborn babies.

    Democratic Underground Latest Breaking News


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