electrocardiography Syllabification: (e·lec·tro·car·di·og·ra·phy)Pronunciation: /iˌlektrōˌkärdēˈägrəfē/ (abbreviation: ECG or EKG)Definition of electrocardiography noun the measurement of electrical activity in the heart and the recording of such activity as a visual trace (on paper or on an oscilloscope screen), using electrodes placed on the skin of the limbs and chest. Derivatives electrocardiographicPronunciation: /-ˌkärdiəˈgrafik/ adjective electrocardiography in other Oxford dictionaries Definition of electrocardiography in the British & World English dictionary