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
President Donald Trump's government-wide hiring freeze threatened to wipe out hundreds of studies and clinical trials that are run through temporary VA appointments – scientific partnerships that have seeded landmark medical inventions from the invention of the pacemaker to the first CAT scan.
—
Cybele Mayes-Osterman, USA TODAY, 16 Mar. 2025
The last activity on Gene's pacemaker was registered on Feb. 17.
—Becca Longmire, People.com, 14 Mar. 2025
His pacemaker last recorded atrial fibrillation (AFib), an irregular heart rhythm, on Feb. 18.
—Abby Norman, Verywell Health, 11 Mar. 2025
The medical examiner in the press conference revealed that Betsy Arakawa, Hackman’s wife, likely died on the afternoon of February 11, while Hackman died on Feb. 18, according to an analysis of his pacemaker.
—Brian Welk, IndieWire, 7 Mar. 2025
See All Example Sentences for pacemaker
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Cybele Mayes-Osterman, USA TODAY, 16 Mar. 2025
The last activity on Gene's pacemaker was registered on Feb. 17.
—Becca Longmire, People.com, 14 Mar. 2025
His pacemaker last recorded atrial fibrillation (AFib), an irregular heart rhythm, on Feb. 18.
—Abby Norman, Verywell Health, 11 Mar. 2025
The medical examiner in the press conference revealed that Betsy Arakawa, Hackman’s wife, likely died on the afternoon of February 11, while Hackman died on Feb. 18, according to an analysis of his pacemaker.
—Brian Welk, IndieWire, 7 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 22 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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