Dictionary.com
definitions
  • synonyms
atrial extrasystole in Medicine

atrial extrasystole

n.
  1. A premature contraction of the heart arising from an ectopic atrial focus.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.