amniocentesis


am·nio·cen·te·sis

noun \ˌam-nē-ō-(ˌ)sen-ˈtē-səs\

medical : a test that is done to check for possible health problems in a baby that is not yet born

plural am·nio·cen·te·ses\-ˌsēz\

Full Definition of AMNIOCENTESIS

:  the surgical insertion of a hollow needle through the abdominal wall and into the uterus to obtain amniotic fluid especially for the determination of fetal sex or chromosomal abnormality

Origin of AMNIOCENTESIS

New Latin, from amnion + centesis puncture, from Greek kentesis, from kentein to prick — more at center
First Known Use: 1957

am·nio·cen·te·sis

noun \ˌam-nē-ō-(ˌ)sen-ˈtē-səs\   (Medical Dictionary)
plural am·nio·cen·te·ses \-ˌsēz\

Medical Definition of AMNIOCENTESIS

: the surgical insertion of a hollow needle through the abdominal wall and into the uterus of a pregnant female to obtain amniotic fluid especially to examine the fetal chromosomes for an abnormality and for the determination of sex

Illustration of AMNIOCENTESIS

amniocentesis

noun    (Concise Encyclopedia)

Surgical insertion of a hollow needle through the abdominal wall into the uterus of a pregnant female to extract fluid from the amniotic sac for analysis of fluid and fetal cells. This can reveal the fetus's sex (important when sex-linked genetic disease is possible), chromosomal disorders, and other problems. First performed in the 1930s, amniocentesis is generally done under local anesthesia in the 15th–17th week of gestation.

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