anular placenta

an·u·lar pla·cen·ta

a placenta in the form of a band encircling the interior of the uterus. Synonym(s): ring-shaped placenta, zonary placenta

an·u·lar pla·cen·ta

(an'yŭ-lăr plă-sen'tă) A placenta in the form of a band encircling the interior of the uterus.