ar·​rhyth·​mic | \ ā-ˈrit͟h-mik How to pronounce arrhythmic (audio) \

Definition of arrhythmic

1 : lacking rhythm or regularity To assist my arrhythmic descents I'd been swinging my arms and shoulders too wildly.— Kenny Moore The conductor-less orchestra pit produces arrhythmic and atonal sounds…— Josef Woodard
2 : of, relating to, characterized by, or resulting from arrhythmia … less than 10 percent of untreated patients develop cardiac problems such as heart block, with its resultant arrhythmic heartbeat— Thomas J. Daniels and Richard C. Falco

Examples of arrhythmic in a Sentence

Recent Examples on the Web For example, a family of anti-arrhythmic drugs that was effective in stopping asymptomatic irregular heartbeats was subsequently found to increase the risk of cardiac arrest when given to heart attack survivors. G. Caleb Alexander, STAT, "Searching for an effective Covid-19 treatment: promise and peril," 10 Apr. 2020 The team suspected that a gene called RYR2 could be the culprit -- mutations of the gene can cause a cardiac arrhythmic disorder that can lead to exercise-fainting spells, seizures or even sudden cardiac death. Harmeet Kaur, CNN, "No one knew why some Amish children were dying suddenly. Now researchers have some answers," 16 Jan. 2020 The kickoff of the NFL’s 100th season was the Rust Bowl, an arrhythmic matchup of two teams who rested their starters in exhibition games this summer and wound up paying the price. Los Angeles Times, "Packers’ defense dominates in win over the Bears in NFL season opener," 5 Sep. 2019 Not all children are embarrassed by their parents’ arrhythmic flossing. Joanna Sugden, WSJ, "Sorry Mom, Your Floss Dancing Is Just Embarrassing," 26 July 2018 For those that were deemed sudden cardiac deaths, just over half were arrhythmic — where devices like an automated external defibrillator can save someone’s life. Kimberly Veklerov,, "Deaths often misclassified as cardiac arrest, UCSF study finds," 18 June 2018 Sudden death was the first manifestation of cardiac disease for more than half the arrhythmic cases, the study found, meaning the individuals had no prior warning sign to their condition. Kimberly Veklerov,, "Deaths often misclassified as cardiac arrest, UCSF study finds," 18 June 2018 Others are more avant-garde and incorporate acrobatic moves, or an arrhythmic dance known as flossing. New York Times, "Bomba: The Enduring Anthem of Puerto Rico," 7 July 2018 And of those that were correctly classified, nearly half were not arrhythmic — involving an irregular heartbeat — meaning that defibrillators or CPR would not have saved the person, the study found. Kimberly Veklerov,, "Deaths often misclassified as cardiac arrest, UCSF study finds," 18 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'arrhythmic.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of arrhythmic

1833, in the meaning defined at sense 1

History and Etymology for arrhythmic

Greek arrhythmos

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The first known use of arrhythmic was in 1833

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Cite this Entry

“Arrhythmic.” Dictionary, Merriam-Webster, Accessed 3 Jul. 2020.

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ar·​rhyth·​mic | \ -mik How to pronounce arrhythmic (audio) \

Medical Definition of arrhythmic

1 : lacking rhythm or regularity arrhythmic locomotor activity
2 : of, relating to, characterized by, or resulting from arrhythmia arrhythmic risk arrhythmic death

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