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
For instance, imagine that the young man with a heart rhythm problem was temporarily unconsciousness, and so his medical team had to instead consult his proxy regarding placement of the pacemaker.
—
Adam W. Gaffney, STAT, 18 May 2026
Seoyoon Jang, a doctoral student in electrical engineering and computer science at the Massachusetts Institute of Technology, is working to protect wireless biomedical devices, such as insulin pumps and pacemakers, from potential quantum attacks.
—Katie Hunt, CNN Money, 17 May 2026
The federal government even provided a high-tech piece of equipment that attempted to pick up the Bluetooth signal from her pacemaker device, with no results.
—Michael Ruiz, FOXNews.com, 11 May 2026
The electrodes are connected by wires running down the neck to a pacemaker-like battery in the chest that powers the device.
—Angela Haupt, Time, 7 May 2026
See All Example Sentences for pacemaker
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Adam W. Gaffney, STAT, 18 May 2026
Seoyoon Jang, a doctoral student in electrical engineering and computer science at the Massachusetts Institute of Technology, is working to protect wireless biomedical devices, such as insulin pumps and pacemakers, from potential quantum attacks.
—Katie Hunt, CNN Money, 17 May 2026
The federal government even provided a high-tech piece of equipment that attempted to pick up the Bluetooth signal from her pacemaker device, with no results.
—Michael Ruiz, FOXNews.com, 11 May 2026
The electrodes are connected by wires running down the neck to a pacemaker-like battery in the chest that powers the device.
—Angela Haupt, Time, 7 May 2026
See All Example Sentences for pacemaker
Cite this Entry
“Pacemaker.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/pacemaker. Accessed 21 May. 2026.
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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