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

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Exposure to long-term pollution accelerates the buildup of plaque in the arteries around the heart, increases the chances of heart failure and arrhythmias, and increases the likelihood of strokes. Alejandra Borunda, NPR, 23 Apr. 2025 Yet research shows that regular users of marijuana are at risk for serious conditions, including strokes, heart attacks, cardiac arrhythmias, heart failure and myocarditis, which is an inflammation of the heart muscle. Sandee Lamotte, CNN Money, 20 Apr. 2025 Just before kickoff of a Week 6 game at the Denver Broncos, Harbaugh experienced a heart arrhythmia. Daniel Popper, The Athletic, 9 Jan. 2025 The mechanics of it are putting certain populations are at risk of like arrhythmias and heart attacks and blood clots and all these other things that are cardiac. Kathleen Wong, USA Today, 8 Apr. 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

Browse Nearby Words

Cite this Entry

“Arrhythmia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrhythmia. Accessed 29 Apr. 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

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!