1. (noun) pacesetter, pacemaker
a leading instance in its field
Synonyms: pacer, pacemaker, artificial pacemaker, cardiac pacemaker, sinoatrial node, pacesetter
2. (noun) pacemaker, cardiac pacemaker, sinoatrial node, SA node
a specialized bit of heart tissue that controls the heartbeat
Synonyms: artificial pacemaker, pacemaker, pacer, cardiac pacemaker, sinoatrial node, pacesetter
3. (noun) pacemaker, artificial pacemaker
an implanted electronic device that takes over the function of the natural cardiac pacemaker
Synonyms: artificial pacemaker, pacemaker, pacer, cardiac pacemaker, sinoatrial node, pacesetter
4. (noun) pacer, pacemaker, pacesetter
a horse used to set the pace in racing
Synonyms: artificial pacemaker, pacemaker, pacer, cardiac pacemaker, sinoatrial node, pacesetter
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