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an·​ti·​ar·​rhyth·​mic -(ˌ)ā-ˈrit͟h-mik How to pronounce antiarrhythmic (audio)
variants or anti-arrhythmic also antiarrhythmia or anti-arrhythmia
: controlling, inhibiting, or preventing cardiac arrhythmia
an antiarrhythmic drug
antiarrhythmic therapy


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variants also anti-arrhythmic
: an agent (as a beta-blocker or calcium channel blocker) that controls, inhibits, or prevents cardiac arrhythmia

Dictionary Entries Near antiarrhythmic

Cite this Entry

“Antiarrhythmic.” Medical Dictionary, Merriam-Webster, Accessed 14 Apr. 2024.

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