pacemaker
1.
(
noun
) an implanted electronic device that takes over the function of the natural cardiac pacemaker
Synonyms:
artificial pacemaker
Related Words:
electronic device
2.
(
noun
) a specialized bit of heart tissue that controls the heartbeat
Synonyms:
SA node
,
cardiac pacemaker
,
sinoatrial node
Related Words:
cardiac muscle
,
heart muscle
3.
(
noun
) a horse used to set the pace in racing
Synonyms:
pacer
,
pacesetter
Related Words:
bangtail
,
race horse
,
racehorse
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