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alternans in Medicine

alternans

(ôl-tûrnănz′)
adj.
  1. Alternating, as in heart contractions.
n.
  1. Alternation in the contractions of the heart.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.