septum pellucidum(redirected from Septum of brain)
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Related to Septum of brain: Cavum septum pellucidum
septum pellucidum[′sep·təm pə′lü·səd·əm]
A thin translucent septum forming the internal boundary of the lateral ventricles of the brain and enclosing between its two laminas the so-called fifth ventricle.