epicardium epicardial • epicarid · · · Info · Definitions · Synonyms · Characters · · epicardium · · Text Latin · · Script 10 · · Length Definitions · · · (noun) the innermost of the two layers of the pericardium. Synonyms: visceral pericardium. · · Noun Definition 1 Synonyms · · · visceral pericardium · · Synonym 1 Characters · · a latin small letter a U+0061 c latin small letter c U+0063 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 m latin small letter m U+006D p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075