amniocentesis

n. removal of amniotic fluid from the uterus (test done during pregnancy)

Amniocentesis (also referred to as amniotic fluid test or AFT), is a medical procedure used in prenatal diagnosis of genetic risk factors, in which a small amount of amniotic fluid, which contains fetal tissues, is extracted from the amnion or amniotic sac surrounding a developing fetus, and the fetal DNA is examined for genetic abnormalities. Amniocentesis is not performed for every pregnancy, but is generally done when an increased risk of genetic defects in the fetus is indicated, by mother's age (over 35 years is common), family history of genetic defects, or other factors.
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Amniocentesis is a procedure used to diagnose fetal defects in the early second trimester of pregnancy. [more]Amniocentesis - Community and Resources

Noun
1. (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
(synonym) amnio
(hypernym) centesis
(classification) pregnancy, gestation, maternity

n. amniocentesis, removal of amniotic fluid from the uterus (test done during pregnancy)