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tachyarrhythmia in Medicine

tachyarrhythmia

(tăk′ē-ə-rĭðmē-ə)
n.
  1. An excessively rapid heartbeat accompanied by arrhythmia.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.