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
Examples of pacemaker in a Sentence
has long been regarded as a pacemaker in home electronics
Recent Examples on the Web
The best treatment, per multiple studies, includes the medicine atropine and temporary pacemaker insertion.
—
Randall Colburn, EW.com, 7 Apr. 2025
In January, Verma inserted the pacemaker into Karzen during an operation that typically lasts two to three hours.
—Daniel I. Dorfman, Chicago Tribune, 1 Apr. 2025
Hackman's pacemaker was last active Feb. 18, meaning the couple's bodies were left unattended for some time and may have deteriorated.
—Patrick Smith, NBC News, 14 Mar. 2025
Heather Jarrell, New Mexico's chief medical examiner, previously shared in a press conference that the last activity on Gene's pacemaker was registered on Feb. 17.
—Rachel McRady, People.com, 13 Mar. 2025
See All Example Sentences for pacemaker
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Randall Colburn, EW.com, 7 Apr. 2025
In January, Verma inserted the pacemaker into Karzen during an operation that typically lasts two to three hours.
—Daniel I. Dorfman, Chicago Tribune, 1 Apr. 2025
Hackman's pacemaker was last active Feb. 18, meaning the couple's bodies were left unattended for some time and may have deteriorated.
—Patrick Smith, NBC News, 14 Mar. 2025
Heather Jarrell, New Mexico's chief medical examiner, previously shared in a press conference that the last activity on Gene's pacemaker was registered on Feb. 17.
—Rachel McRady, People.com, 13 Mar. 2025
See All Example Sentences for pacemaker
Cite this Entry
“Pacemaker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pacemaker. Accessed 17 May. 2025.
Copy CitationKids 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
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