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pyloric sphincter in Medicine

pyloric sphincter

n.
  1. A thickening of the layer of the gastric musculature encircling the gastroduodenal junction.sphincter muscle of pylorus
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.