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vater's ampulla in Medicine

Vater's ampulla

(fätərz)
n.
  1. The dilation within the major duodenal papilla, formed by the junction of the common bile duct and the main pancreatic duct.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.