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sinoatrial in Medicine

sinoatrial

(sī′nō-ātrē-əl)
adj.
  1. Relating to the venous sinus and the right atrium of the heart.
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.