arrhythmia

noun

ar·​rhyth·​mia ā-ˈrit͟h-mē-ə How to pronounce arrhythmia (audio)
: an alteration in rhythm of the heartbeat either in time or force

Examples of arrhythmia in a Sentence

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His company also plans to look at the overlap of arrhythmias and other diseases, such as COPD, kidney disease and diabetes, to ideally prevent heart attacks and strokes. Alex Knapp, Forbes, 19 Feb. 2025 Severe arrhythmias were missed in 4.4% of patients by the human reviewers and in only 0.3% of patients by the AI. Nancy Lapid, USA TODAY, 15 Feb. 2025 If taking medications for arrhythmias or other heart conditions, monitor for any signs or symptoms of worsening arrhythmias. Kirstyn Hill, Pharmd, Mph, Health, 13 Jan. 2025 The Russian authorities attributed his death to a series of diseases aggravated by heart arrhythmia, a conclusion that was strongly rejected by his family and allies, who blamed the Kremlin for his death. Nataliya Vasilyeva, New York Times, 17 Jan. 2025 See All Example Sentences for arrhythmia

Word History

Etymology

borrowed from Greek arrhythmía "lack of rhythm," from árrhythmos "lacking rhythm, unrhythmical" + -ia -ia entry 1 — more at arrhythmic

First Known Use

circa 1860, in the meaning defined above

Time Traveler
The first known use of arrhythmia was circa 1860

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Cite this Entry

“Arrhythmia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrhythmia. Accessed 12 Mar. 2025.

Medical Definition

arrhythmia

noun
ar·​rhyth·​mia ā-ˈrit͟h-mē-ə How to pronounce arrhythmia (audio)
: an alteration in rhythm of the heartbeat either in time or force

More from Merriam-Webster on arrhythmia

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