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tetral'ogy of Fal•lot'

Pronunciation: (fa-lō'), [key] Pathol.
a congenital malformation of the heart characterized by an abnormal opening in the septum dividing the ventricles, misplacement of the aorta so that it receives blood from both ventricles instead of only the left ventricle, narrowing of the pulmonary artery, and enlargement of the right ventricle.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

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