cardiac muscle cardiac murmur • cardiac output · · · Info · Definitions · Synonyms · Characters · · cardiac muscle · · Text Common · · Latin · · Scripts 14 · · Length 5 · · Syllables Definitions · · · (noun) the muscle tissue of the heart; adapted to continued rhythmic contraction. Synonyms: cardiac muscle, heart muscle. · · Noun Definition 1 Synonyms · · · heart muscle · · Synonym 1 Characters · · space U+0020 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 l latin small letter l U+006C m latin small letter m U+006D r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075