NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,034 terms related to cancer and medicine.
- listen (PAYS-may-ker)
- An electronic device that is implanted in the body to monitor heart rate and rhythm. It gives the heart electrical stimulation when it does not beat normally. It runs on batteries and has long, thin wires that connect it to the heart. Also called artificial pacemaker and cardiac pacemaker.