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
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 like the pacemaker and the CAT scan.
—
Christopher Cann, USA TODAY, 17 Mar. 2025
Based on Hackman's pacemaker data, his approximate date of death is February 18.
—Mark Davis, Newsweek, 14 Mar. 2025
Authorities believe Hackman died on Feb. 18, which was the last time activity was recorded on his pacemaker.
—Martha Ross, The Mercury News, 14 Mar. 2025
Hypertensive and atherosclerotic cardiovascular disease took the acting legend’s life, likely on February 18 when his pacemaker last recorded his heartbeat, according to Jarrell.
—Dalia Faheid, CNN, 8 Mar. 2025
See All Example Sentences for pacemaker
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Christopher Cann, USA TODAY, 17 Mar. 2025
Based on Hackman's pacemaker data, his approximate date of death is February 18.
—Mark Davis, Newsweek, 14 Mar. 2025
Authorities believe Hackman died on Feb. 18, which was the last time activity was recorded on his pacemaker.
—Martha Ross, The Mercury News, 14 Mar. 2025
Hypertensive and atherosclerotic cardiovascular disease took the acting legend’s life, likely on February 18 when his pacemaker last recorded his heartbeat, according to Jarrell.
—Dalia Faheid, CNN, 8 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 2 Apr. 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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