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pacemaker

PRIMARY MEANINGS OF: pacemaker

1
n
a horse used to set the pace in racing
2
n
a specialized bit of heart tissue that controls the heartbeat
FULL DEFINITIONS OF: pacemaker
1

n a horse used to set the pace in racing

Synonyms:
pacer, pacesetter
Type of:
bangtail, race horse, racehorse
a horse bred for racing

n a leading instance in its field

Synonyms:
pacesetter
Type of:
example, exemplar, good example, model
something to be imitated
2

n a specialized bit of heart tissue that controls the heartbeat

Synonyms:
SA node, cardiac pacemaker, sinoatrial node
Type of:
cardiac muscle, heart muscle
the muscle tissue of the heart; adapted to continued rhythmic contraction

n an implanted electronic device that takes over the function of the natural cardiac pacemaker

Synonyms:
artificial pacemaker
Type of:
electronic device
a device that accomplishes its purpose electronically
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