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
Preliminary findings indicated Arakawa, 65, had died at least a week before her husband, and pacemaker information indicated Hackman had been dead for at least nine days before they were found.
—
Theresa Braine, New York Daily News, 28 Apr. 2025
Northwestern engineers develop tiny pacemaker, smaller than a grain of rice
A new, tiny pacemaker — smaller than a grain of rice — developed at Northwestern University could play a sizable role in the future of medicine, according to the engineers who developed it.
—Chicago Tribune, 4 Apr. 2025
Hackman, 95, likely died several days after Arakawa, on February 18, when his pacemaker last recorded his heartbeat, authorities have said.
—Alli Rosenbloom, CNN, 17 Mar. 2025
In the final report, the medical examiner confirmed Hackman’s date of death as Feb. 18, when his pacemaker showed an abnormal heart rhythm before signals stopped.
—Theresa Braine, New York Daily News, 28 Apr. 2025
See All Example Sentences for pacemaker
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Theresa Braine, New York Daily News, 28 Apr. 2025
Northwestern engineers develop tiny pacemaker, smaller than a grain of rice
A new, tiny pacemaker — smaller than a grain of rice — developed at Northwestern University could play a sizable role in the future of medicine, according to the engineers who developed it.
—Chicago Tribune, 4 Apr. 2025
Hackman, 95, likely died several days after Arakawa, on February 18, when his pacemaker last recorded his heartbeat, authorities have said.
—Alli Rosenbloom, CNN, 17 Mar. 2025
In the final report, the medical examiner confirmed Hackman’s date of death as Feb. 18, when his pacemaker showed an abnormal heart rhythm before signals stopped.
—Theresa Braine, New York Daily News, 28 Apr. 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 31 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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