Quick definitions from WordNet (amniocentesis)
▸ noun: (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
▸ Also see amniocentesis
▸ noun: (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
▸ Also see amniocentesis