Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun pacemaker

4 senses of pacemaker

Sense 1
pacesetter, pacemaker -- (a leading instance in its field; "the new policy will be a pacesetter in community relations")
       => exemplar, example, model, good example -- (something to be imitated; "an exemplar of success"; "a model of clarity"; "he is the very model of a modern major general")

Sense 2
pacemaker, cardiac pacemaker, sinoatrial node, SA node -- (a specialized bit of heart tissue that controls the heartbeat)
       => cardiac muscle, heart muscle -- (the muscle tissue of the heart; adapted to continued rhythmic contraction)

Sense 3
pacemaker, artificial pacemaker -- (an implanted electronic device that takes over the function of the natural cardiac pacemaker)
       => electronic device -- (a device that accomplishes its purpose electronically)

Sense 4
pacer, pacemaker, pacesetter -- (a horse used to set the pace in racing)
       => racehorse, race horse, bangtail -- (a horse bred for racing)