pacemaker

noun pace·mak·er \ ˈpās-ˌmā-kər \
|Updated on: 11 Aug 2018

Definition of pacemaker

1 a : one that sets the pace for another
b : one that takes the lead or sets an example
2 a : a group of cells or a body part (such as the sinus node of the heart) that serves to establish and maintain a rhythmic activity
b : an electrical device for stimulating or steadying the heartbeat or reestablishing the rhythm of an arrested heart

pacemaking

play \ˈpās-ˌmā-kiŋ\ noun

Examples of pacemaker in a Sentence

  1. has long been regarded as a pacemaker in home electronics

Recent Examples of pacemaker from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'pacemaker.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of pacemaker

1884

in the meaning defined at sense 1a

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PACEMAKER Defined for English Language Learners

pacemaker

Definition of pacemaker for English Language Learners

  • medical : a small electrical machine put inside a person to make the heart beat evenly


Medical Dictionary

pacemaker

noun pace·mak·er \ ˈpā-ˌsmā-kər \

medical Definition of pacemaker

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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