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antiarrhythmic
an·ti·ar·rhyth·mic [ àntee ə rímik, àntī ə rímik ]


adjective 
Definition:
 
counteracting irregular heart beat: counteracting irregular heart action


noun  (plural an·tiar·rhyth·mics)
Definition:
 
antiarrhythmic drug: a drug that counteracts irregular heart action
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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