placenta previa

Definitions of placenta previa
  1. noun
    pregnancy in which the placenta is implanted in the lower part of the uterus (instead of the upper part); can cause bleeding late in pregnancy; delivery by cesarean section may be necessary
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    type of:
    gestation, maternity, pregnancy
    the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus
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