Synonym(s)
Definition(s)
- 1: A group of cells or a body part (as the sinoatrial node of the heart) that serves to establish and maintain a rhythmic activity.
2: An electrical device for stimulating or steadying the heartbeat or reestablishing the rhythm of an arrested heart--called also pacer.
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Definition from: Merriam-Webster's Medical Dictionary
by Merriam-Webster Inc.
See also Understanding Medical Terminology.