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antiarrhythmic

[ an-tee-uh-rith-mik, -uh-rith-, an-tahy- ]
/ ˌæn ti əˈrɪð mɪk, -əˈrɪθ-, ˌæn taɪ- /
Pharmacology
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adjective
of or relating to any substance that prevents, inhibits, or alleviates heartbeat irregularities.
noun
any such substance, as lidocaine.
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Origin of antiarrhythmic

First recorded in 1950–55; anti- + arrhythmic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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