noun, plural am·ni·o·cen·te·ses [am-nee-oh-sen-tee-seez] /ˌæm ni oʊ sɛnˈti siz/.
Words nearby amniocentesis
British Dictionary definitions for amniocentesis
noun plural -ses (-siːz)
Word Origin for amniocentesis
Medical definitions for amniocentesis
n. pl. am•ni•o•cen•te•ses (-sēz′)
Scientific definitions for amniocentesis
Cultural definitions for amniocentesis
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.