arrhythmia
noun
ar·rhyth·mia
ā-ˈrit͟h-mē-ə 
: an alteration in rhythm of the heartbeat either in time or force
Examples of arrhythmia in a Sentence
Recent Examples on the Web
There, the veterinarians discovered an arrhythmia.
—
Ashlyn Robinette, PEOPLE, 14 Nov. 2025
Ventricular fibrillation, also known as V-fib, is an abnormal heart rhythm (arrhythmia) that causes a person's lower heart chambers to race and affects their ability to pump blood, according to the Cleveland Clinic.
—Terry Collins, USA Today, 13 Nov. 2025
That could include anxiety disorders, cardiac arrhythmias, or thyroid issues.
—Lauryn Higgins, Time, 11 Nov. 2025
Supplements That Affect Blood Pressure and Heart Rate Some supplements can raise blood pressure or alter heart rhythms, which can lead to rapid changes in heart rate, high blood pressure (hypertension), or abnormal heart rhythms (arrhythmia).
—Ayesha Gulzar, Verywell Health, 28 Oct. 2025
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Ashlyn Robinette, PEOPLE, 14 Nov. 2025
Ventricular fibrillation, also known as V-fib, is an abnormal heart rhythm (arrhythmia) that causes a person's lower heart chambers to race and affects their ability to pump blood, according to the Cleveland Clinic.
—Terry Collins, USA Today, 13 Nov. 2025
That could include anxiety disorders, cardiac arrhythmias, or thyroid issues.
—Lauryn Higgins, Time, 11 Nov. 2025
Supplements That Affect Blood Pressure and Heart Rate Some supplements can raise blood pressure or alter heart rhythms, which can lead to rapid changes in heart rate, high blood pressure (hypertension), or abnormal heart rhythms (arrhythmia).
—Ayesha Gulzar, Verywell Health, 28 Oct. 2025
See All Example Sentences for arrhythmia
Cite this Entry
“Arrhythmia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrhythmia. Accessed 17 Nov. 2025.
Copy CitationMedical Definition
arrhythmia
noun
ar·rhyth·mia
ā-ˈrit͟h-mē-ə
: an alteration in rhythm of the heartbeat either in time or force
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