1) Cardiography 
Electrocardiography (ECG or EKG from kardia, meaning heart) is the recording of the electrical activity of the heart. Traditionally this is in the form of a transthoracic (across the thorax or chest) interpretation of the electrical activity of the heart over a period of time, as detected by electrodes attached to the surface of the skin and recor...
the making of graphic records of the variations in electrical potential caused by electrical activity of the heart muscle and detected at the body surface, as a method for studying the action of the heart muscle.
method of graphic tracing (electrocardiogram; ECG or EKG) of the electric current generated by the heart muscle during a heartbeat. The tracing is ... [6 related articles]
The recording and interpreting of the electrical activity of the heart and measures the actions of the heart for abnormalities.
technique for investigating the electrical activity of the heart, based on the recording and interpretation of the electrocardiogram
<procedure> The making of graphic records of the variations in electrical potential caused by electrical activity of the heart muscle and detected at the body surface, as a method for studying the action of the heart muscle. ... (18 Nov 1997) ... 
(e-lek″tro-kahr″de-og´rә-fe) the graphic recording from the body surface of the electric potential of currents generated by the heart, as a means of studying the action of the heart muscle. See also electrocardiogram. adj., electrocardiograph´ic., adj.
Type: Term Pronunciation: ē-lek′trō-kar′dē-og′ră-fē Definitions: 1. A method of recording electrical currents traversing the heart muscle. 2. The study and interpretation of electrocardiograms.
electrocardiography 1. A method of recording electrical currents traversing the heart muscle just prior to each heart beat. 2. The study and interpretation of electrocardiograms.
A test that measures the electrical activity of the heart. ECG or EKG.