from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A procedure in which a small sample of amniotic fluid is drawn out of the uterus through a needle inserted in the abdomen. The fluid is then analyzed to detect genetic abnormalities in the fetus or to determine the sex of the fetus.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A procedure for obtaining amniotic fluid from a pregnant animal, by inserting a hollow needle through the abdominal wall and into the amniotic sac. Used in diagnosing possible genetic defects and/or obstetric complications.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. (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
New Latin amniocentēsis : amnion + Greek kentēsis, act of pricking (from kentein, to prick; see kent- in Indo-European roots).(American Heritage® Dictionary of the English Language, Fourth Edition)
From amnio(n) + -centesis. (Wiktionary)