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
Hackman's pacemaker recorded its last event on Feb. 17, which was nine days before the bodies were found, Mendoza said Friday.
—
Nicole Brown Chau, CBS News, 3 Mar. 2025
Baden said if the dog was unable to access water during the nine-day stretch between when Hackman's pacemaker stopped and when he was found, the dog could have just died from dehydration.
—Liam Quinn, People.com, 3 Mar. 2025
Mendoza said that while the investigation into the cause of Hackman’s death is active and ongoing, officials found that the last day Hackman’s pacemaker registered was on February 17, 10 days before he was discovered deceased.
—Brian Welk, IndieWire, 28 Feb. 2025
In Paris, Ingebrigtsen became the race’s unofficial pacemaker, going out at world-record speed (3:26.00) but tied up and finished fourth.
—Liam Tharme, The Athletic, 19 Feb. 2025
See All Example Sentences for pacemaker
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Nicole Brown Chau, CBS News, 3 Mar. 2025
Baden said if the dog was unable to access water during the nine-day stretch between when Hackman's pacemaker stopped and when he was found, the dog could have just died from dehydration.
—Liam Quinn, People.com, 3 Mar. 2025
Mendoza said that while the investigation into the cause of Hackman’s death is active and ongoing, officials found that the last day Hackman’s pacemaker registered was on February 17, 10 days before he was discovered deceased.
—Brian Welk, IndieWire, 28 Feb. 2025
In Paris, Ingebrigtsen became the race’s unofficial pacemaker, going out at world-record speed (3:26.00) but tied up and finished fourth.
—Liam Tharme, The Athletic, 19 Feb. 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 8 Mar. 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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