heart attack heart and soul • heart block · · · Info · Definitions · Characters · · heart attack · · Text Common · · Latin · · Scripts 12 · · Length 3 · · Syllables Definitions · · · (noun) a sudden severe instance of abnormal heart function. Synonyms: heart attack. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 h latin small letter h U+0068 k latin small letter k U+006B r latin small letter r U+0072 t latin small letter t U+0074