antiarrhythmic

[ an-tee-uh-rith-mik, -uh-rith-, an-tahy- ]
/ ˌæn ti əˈrɪð mɪk, -əˈrɪθ-, ˌæn taɪ- /
Pharmacology

adjective

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

noun

any such substance, as lidocaine.

Origin of antiarrhythmic

First recorded in 1950–55; anti- + arrhythmic

Medical definitions for antiarrhythmic

antiarrhythmic
[ ăn′tē-ə-rĭðmĭk, ăn′tī- ]

adj.

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

n.

An antiarrythmic drug.