Dictionary
en•do•car•di•um
Pronunciation: (en"dō-kär'dē-um), [key]—
n.,
—pl. -di•aPronunciation: (-dē-u). [key]
Anat.
the serous membrane that lines the cavities of the heart.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.