antiarrhythmic

[an-tee-uh-rith -mik, -uh-rith-, an-tahy-]Pharmacology

of or relating to any substance that prevents, inhibits, or alleviates heartbeat irregularities.

any such substance, as lidocaine.

Origin of antiarrhythmic

First recorded in 1950–55; anti- + arrhythmic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

antiarrhythmic in Medicine

[ăn′tē-ə-rĭð′mĭk, ăn′tī-]

Preventing or alleviating irregularities in the force or rhythm of the heart.

An antiarrythmic drug.