Meaning of PLACENTA PREVIA

WordNet Dictionary
	Definition:		[n]  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
	See Also:		gestation, pregnancy
Medical Dictionary
	Definition:		An abnormal location of the placenta in which it partially or completely covers the internal opening of the cervix.
Biology Dictionary
	Definition:		This is an obstetric emergency in which part or all of the placenta is attached to the lower uterine segment and obstructs part or all of the cervix. During active labor, there is a risk that the placenta separates from the uterus before delivery of the fetus, causing massive hemorrhage.