pacemaker

noun

pace·​mak·​er ˈpās-ˌmā-kər 

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

ˈpās-ˌmā-kiŋ 

noun

Synonyms

• bellwether
• leader
• pacer
• pacesetter
• trendsetter

Examples of pacemaker in a Sentence

has long been regarded as a pacemaker in home electronics

Recent Examples on the Web

Devices called pacemakers can also treat arrhythmia and manage related palpitations. —Mark Gurarie, Verywell Health, 16 Sep. 2024

The same heart doctor implanted a pacemaker, Hitt said. —Daniel Gonzalez, USA TODAY, 10 Sep. 2024

My mom has a pacemaker, and my dad has Alzheimer’s. —R. Eric Thomas, The Mercury News, 7 Aug. 2024

In posts shared with a growing number of supporters from all around the world, Huda uploaded photos of her son resting in a tent, as well as videos of the frequent, painful seizure-like activity that came with his pacemaker's battery dwindling. —Camilla Alcini, ABC News, 12 Sep. 2024

Word History

First Known Use

1884, in the meaning defined at sense 1a

Kids Definition

pacemaker

noun

pace·​mak·​er ˈpā-ˌsmā-kər 

1

: a group of cells or a bodily part (as of the heart) that serves to establish and maintain a rhythmic bodily activity

2

: an electrical device for steadying or establishing the heartbeat

Medical Definition

pacemaker

noun

pace·​mak·​er ˈpā-ˌsmā-kər 

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