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sinus node

[sahy-nuh s]
noun Anatomy.
  1. sinoatrial node.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

sinus node in Medicine

sinus node

n.
  1. sinoatrial node
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.