electrocardiograph
/ɪˌlɛktroʊˈkɑrdioʊˌɡræf/
noun
- A machine used to record the electrical activity of the heart, producing an electrocardiogram.
- Modern electrocardiographs are portable and can be used in ambulances.
- The nurse attached electrodes to the patient's chest and turned on the electrocardiograph.
- The technician checked the electrocardiograph before starting the test.