Daily Almanac for
Nov 28, 2009
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pep'tic ul'cer



Pathol.
an erosion of the mucous membrane of the lower esophagus, stomach, or duodenum, caused in part by the corrosive action of the gastric juice.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

pepticpeptidase
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