electrocardiograph
nounUK /ɪˌlektrəʊˈkɑːdiəɡrɑːf/
US /ɪˌlektroʊˈkɑːrdiəɡræf/
A machine that draws a picture of your heartbeat.
The doctor used an electrocardiograph to check how the patient's heart was beating.
OTHER MEANINGS
2. A record or tracing of the heart's electrical activity made by such a machine.
The electrocardiograph showed a steady rhythm with no signs of trouble.
3. The process or technique of recording the heart's electrical signals.
Electrocardiograph technology has improved greatly over the past century.
4. A device used in emergency rooms to quickly assess heart function.
Paramedics carried a portable electrocardiograph to the scene.