IPA: /ˌæm.ni.oʊ.sənˈtiː.sɪs/
KK: /æmniəʊsɛnˈtiːsɪs/
Amniocentesis is a medical procedure where a small amount of amniotic fluid is taken from the uterus using a needle. This fluid is tested to check for genetic problems in the baby or to find out the baby's sex.
The doctor recommended an amniocentesis to check for any genetic disorders in the unborn child.
Amniocentesis is formed from "amnion" (from Greek "amnion", meaning the fetal membrane) and "centesis" (from Greek "kentesis", meaning to puncture). The term refers to the procedure of puncturing the amniotic sac to obtain amniotic fluid for testing.
Think of the 'amnion' as the protective membrane around a fetus and 'centesis' as the act of puncturing — this helps you remember that amniocentesis is a procedure that punctures this membrane to collect fluid.