Septum

(sepf-tuvi) \_sepire, to hem in]. A partition; a division-wall. S. atriorum, S. auricula rum, the S. between the right and left auricles of the heart. S. crurale, the layer of areolar ti ue closing the femoral ring. S. lucidum, a thin translucent septum forming the internal boundary of the lateral ventricles of the brain and enclosing between its two lamina the fifth ventricle. S., Nasal, the S. between the two nasal cavities. S., Pectin i form, that between the corpora cavernosa of the penis. S., Recto vaginal, the ti ue forming the partition between the rectum and the vagina. S. ventriculorum, the S. between the two ventricles of the heart. 575