septum pellucidum(redirected from Septum (brain))
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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.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.