— pacemaking , n.
/pays"may'keuhr/ , n.
1. pacesetter.
2. Med. an electronic device implanted beneath the skin for providing a normal heartbeat by electrical stimulation of the heart muscle, used in certain heart conditions.
3. Anat. , Physiol. any specialized tissue that governs a rhythmic or cyclic biological activity, as the sinoatrial node of the heart that controls heartbeat.
[ 1880-85; PACE 1 + MAKER ]