acleistocardia

 [uh-klahy-stuh-kahr-dee-uh, ey-klahy-]  

a·cleis·to·car·di·a

   [uh-klahy-stuh-kahr-dee-uh, ey-klahy-]
noun Pathology.
a failure of the foramen ovale of the heart to close.
Origin:
< Greek ákleisto(s) not closed (a- a-6 + kleis-, variant stem of kléiein to close + -tos verbal adjective suffix) + -cardia
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Based on the Random House Dictionary, © Random House, Inc. 2012.
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Acleistocardia has a plethora of syllables.
So is supercalifragilisticexpialidocious. Does it mean:
(used as a nonsense word by children to express approval or to represent the longest word in English.)
a white, crystalline, water-insoluble, powerful high explosive, C3H6N6O6, used chiefly in bombs and shells.
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American Heritage
Medical Dictionary

acleistocardia a·cleis·to·car·di·a (ə-klī'stō-kär'dē-ə)
n.
An opening in the oval foramen of the heart.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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