echocardiogram Syllabification: (ech·o·car·di·o·gram)Pronunciation: /ˌekōˈkärdēəˌgram/Definition of echocardiogram noun Medicine a test of the action of the heart using ultrasound waves to produce a visual display, used for the diagnosis or monitoring of heart disease. echocardiogram in other Oxford dictionaries Definition of echocardiogram in the British & World English dictionary
