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
Nancy Guthrie’s pacemaker app disconnects from her cellphone.
—
Hannah Fry, Los Angeles Times, 10 Feb. 2026
She is reported to have a pacemaker and a history of high blood pressure and other heart issues.
—Bradford Betz, FOXNews.com, 9 Feb. 2026
Investigators have said that Nancy Guthrie's video doorbell and pacemaker app were both disconnected overnight.
—Jeanine Santucci, USA Today, 7 Feb. 2026
The pacemaker needs to be within range of either a home box device that's paired with the pacemaker and typically kept at the bedside, or to a smartphone or smartwatch app, in order to transmit the data to the clinic monitoring the pacemaker.
—Dina Kaur, AZCentral.com, 6 Feb. 2026
See All Example Sentences for pacemaker
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Hannah Fry, Los Angeles Times, 10 Feb. 2026
She is reported to have a pacemaker and a history of high blood pressure and other heart issues.
—Bradford Betz, FOXNews.com, 9 Feb. 2026
Investigators have said that Nancy Guthrie's video doorbell and pacemaker app were both disconnected overnight.
—Jeanine Santucci, USA Today, 7 Feb. 2026
The pacemaker needs to be within range of either a home box device that's paired with the pacemaker and typically kept at the bedside, or to a smartphone or smartwatch app, in order to transmit the data to the clinic monitoring the pacemaker.
—Dina Kaur, AZCentral.com, 6 Feb. 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 12 Feb. 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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