Amnio and Centesis

Amnio 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.

Centesis and amnio are semantically related. In some cases you can use "Centesis" instead a noun "Amnio".

Centesis noun - (surgery) the act of puncturing a body cavity or organ with a hollow needle in order to draw out fluid.

Amnio and centesis are semantically related. Sometimes you can replace term "Amnio" with "Centesis", this nouns are similar.