Medical Dictionary

amniocentesis am·ni·o·cen·te·sis (ām'nē-ō-sěn-tē'sĭs)
n. pl. am·ni·o·cen·te·ses (-sēz')
A procedure in which a small sample of amniotic fluid is drawn out of the uterus through a needle inserted in the abdomen and is then analyzed to detect genetic abnormalities in the fetus or to determine the sex of the fetus.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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