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a condition in which the membrane has no opening and completely occludes the vagina.
Etymology: L, im + perforare, to pierce; Gk, hymen, membrane
a hymen that completely encloses the external orifice of the vagina.
A hymen without an opening. Menstruation occurs, but the blood cannot escape from the vagina because of the obstruction of the hymen. The treatment is surgical incision of the hymen.Synonym: unruptured hymen
See also: hymen