Pacemaker Definition
pāsmākər
pacemakers
noun
pacemakers
A runner, horse, automobile, etc. that sets the pace for others, as in a race.
Webster's New World
A person, group, or thing that leads the way or serves as a model.
Webster's New World
A leader in a field.
The fashion house that is the pacemaker.
American Heritage
A dense network of interwoven, specialized muscle fibers in the right atrium of the heart that controls the rhythm of the electrical impulses that cause the heartbeat.
Webster's New World
Any of several body parts that control the rhythm of a biological activity, as an area in the stomach that controls stomach contractions.
Webster's New World
Synonyms:
- pacesetter
- SA node
- sinoatrial node
- cardiac pacemaker
- artificial pacemaker
- pacer
Other Word Forms of Pacemaker
Noun
Singular:
pacemaker
Plural:
pacemakers
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