Definition of Duodenum

Duodenum: The first part of the small intestine. The duodenum is a common site for peptic ulcer formation.

Last Editorial Review: 3/19/2012

Tummy Trouble Quiz: Test Your IQ of Digestive Diseases
Search MedTerms:

Back to MedTerms online medical dictionary A-Z List
Pill Identifier Tool

Need help identifying pills and medications?
Use the pill finder tool on RxList.