arrhythmic
adjective
ar·rhyth·mic
ā-ˈrit͟h-mik 
1
: lacking rhythm or regularity
To assist my arrhythmic descents I'd been swinging my arms and shoulders too wildly.—
Kenny Moore
Kenny MooreThe conductor-less orchestra pit produces arrhythmic and atonal sounds …—Josef Woodard
Josef Woodard2
: 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
Thomas J. Daniels and Richard C. FalcoExamples of arrhythmic in a Sentence
Recent Examples on the Web
Kirk Baxter’s arrhythmic cutting is designed around quicksilver shifts that, along with Barry Ackroyd’s restlessly attentive, mostly handheld camerawork, allow Bigelow to redirect our attention with virtuoso command.
—David Rooney, HollywoodReporter, 2 Sep. 2025
Having a tachycardic and arrhythmic heart in an elderly cat is not a good thing and may lead to an emergency very quickly, if not already almost present.
—Dr. John De Jong, Boston Herald, 15 June 2025
The constant, arrhythmic flickers make for a hypnotic light show.
—Kate Knibbs, WIRED, 27 Sep. 2024
Audiences may be divided by the film’s arrhythmic storytelling and third-act plunge into outright, impressionistic disorder — but adventurous distributors should see its talking-point potential, while a main competition berth at Karlovy Vary will kick off a long festival run.
—Guy Lodge, Variety, 3 July 2024
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David Rooney, HollywoodReporter, 2 Sep. 2025
Having a tachycardic and arrhythmic heart in an elderly cat is not a good thing and may lead to an emergency very quickly, if not already almost present.
—Dr. John De Jong, Boston Herald, 15 June 2025
The constant, arrhythmic flickers make for a hypnotic light show.
—Kate Knibbs, WIRED, 27 Sep. 2024
Audiences may be divided by the film’s arrhythmic storytelling and third-act plunge into outright, impressionistic disorder — but adventurous distributors should see its talking-point potential, while a main competition berth at Karlovy Vary will kick off a long festival run.
—Guy Lodge, Variety, 3 July 2024
See All Example Sentences for arrhythmic
Cite this Entry
“Arrhythmic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/arrhythmic. Accessed 31 Oct. 2025.
Copy CitationMedical Definition
arrhythmic
adjective
ar·rhyth·mic
-mik
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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