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am·ni·ot·o·my .am-nē-'ät-ə-mē n, pl -mies intentional rupture of the fetal membranes to induce or facilitate labor
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n.
a method of surgically inducing labour by puncturing the amnion surrounding the baby in the uterus using an amnihook or similar instrument.
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am·ni·ot·o·my (am″ne-otґə-me) [amnio- + -tomy] deliberate rupture of the fetal membranes to induce labor.Medical dictionary. 2011.