- pacesetter.
- an electronic device implanted beneath the skin for providing a normal heartbeat by electrical stimulation of the heart muscle, used in certain heart conditions.
- any specialized tissue that governs a rhythmic or cyclic biological activity, as the sinoatrial node of the heart that controls heartbeat.
- a person, horse, vehicle, etc, used in a race or speed trial to set the pace
- a person, an organization, etc, regarded as being the leader in a particular field of activity
- a small area of specialized tissue within the wall of the right atrium of the heart whose spontaneous electrical activity initiates and controls the beat of the heart
- an electronic device for use in certain cases of heart disease to assume the functions of the natural cardiac pacemaker
