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a condition in which the urorectal fold has failed to divide the cloaca into rectal and urogenital portions.
Etymology: L, persistere, to persist, cloaca, sewer
a congenital anomaly in which the intestinal, urinary, and reproductive ducts open into a common cavity, a result of the failure of the urorectal septum to form during prenatal development. Also called congenital cloaca.
per·sis·tent clo·a·ca(pĕr-sis'tĕnt klō-ā'kă)
A condition in which the urorectal septum has failed to divide the cloaca of the embryo into rectal and urogenital portions.