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amniocentesis Syllabification: am·ni·o·cen·te·sis
Pronunciation: /ˌamnēōsenˈtēsəs/

Definition of amniocentesis in English:

noun (plural amniocenteses-sēz)

The sampling of amniotic fluid using a hollow needle inserted into the uterus, to screen for developmental abnormalities in a fetus.
Example sentences
  • The whole process is called an amniocentesis, or amnio, in the vernacular.
  • In amniocentesis, the health care provider inserts a thin needle through the woman's abdomen.
  • Between the 15th and 18th weeks of pregnancy, the mother can also have an amniocentesis to screen for the Tay-Sachs gene.


1950s: from amnion + Greek kentēsis 'pricking' (from kentein 'to prick').

Words that rhyme with amniocentesis

anamnesis, ascesis, catechesis, diesis, exegesis, mimesis, prosthesis, psychokinesis, telekinesis
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