Noun: pacemaker 'peys,mey-ku(r)
- A specialized bit of heart tissue that controls the heartbeat
"The doctor monitored the function of the patient's natural pacemaker";
- cardiac pacemaker, sinoatrial node, SA node
- An implanted electronic device that takes over the function of the natural cardiac pacemaker
"The patient's irregular heartbeat was corrected with an artificial pacemaker";
- artificial pacemaker
- A leading instance in its field
"the new policy will be a pacemaker in community relations";
- pacesetter
- A horse used to set the pace in racing
"The pacemaker led the pack for the first half of the race";
- pacer, pacesetter
Derived forms: pacemakers
Type of: bangtail [US, informal], cardiac muscle, electronic device, example, exemplar, good example, heart muscle, model, neddy [Austral, informal], pony [informal], race horse, racehorse
Encyclopedia: Pacemaker