Main Entry: epi·car·di·um Pronunciation: -E-&m Function: noun Inflected Form: pluralepi·car·dia/-E-&/ : the visceral part of the pericardium that closely envelops the heart called also visceral pericardium; —compare PARIETAL PERICARDIUM
epicardium ep·i·car·di·um (ěp'ĭ-kär'dē-əm) n.pl.ep·i·car·di·a (-dē-ə) The inner layer of the pericardium that is in contact with the surface of the heart. Also called visceral layer.