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Meaning of antiarrhythmic

an•ti•ar•rhyth•mic

Pronunciation: (an"tē-u-ri'mik, -u-rith'-, an"tī-), [key]
— Pharm. Pharm.
—adj.
  1. of or pertaining to any substance that prevents, inhibits, or alleviates heartbeat irregularities.
—n.
  1. any such substance, as lidocaine.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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