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hy·men bi·fe·nes·tra·'tus, hymen biforis
a hymen in which there are two openings separated by a wide septum. Compare: septate hymen.
Farlex Partner Medical Dictionary © Farlex 2012
A vaginal membrane with two openings separated by a thick septum; the structure partially covers the os.
See also: hymen
Medical Dictionary, © 2009 Farlex and Partners