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|Noun||1.||cervix uteri - necklike opening to the uterus |
orifice, porta, opening - an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
incompetent cervix - (obstetrics) uterine cervix that becomes dilated before term and without labor often resulting in miscarriage or premature birth