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Definition of Septum, interventricular

Septum, interventricular: The wall separating the lower chambers (the ventricles) of the heart. A hole in the interventricular septum is termed a ventricular septal defect (VSD).

Source: MedTerms™ Medical Dictionary
http://www.medicinenet.com/script/main/art.asp?articlekey=5458
Last Editorial Review: 8/28/2013

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