Relating to the endocardium and the myocardium.
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en·do·myo·car·di·al .en-dō-.mī-ə-'kärd-ē-əl adj of, relating to, or affecting the endocardium and the myocardium <an \endomyocardial biopsy>
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en·do·myo·car·di·al (en″do-mi″o-kahrґde-əl) pertaining to the endocardium and the myocardium.Medical dictionary. 2011.