megaduodenum
noun
mega·du·o·de·num
ˌmeg-ə-ˌd(y)ü-ə-ˈdē-nəm; -d(y)u̇-ˈäd-ᵊn-əm
plural megaduodena
-ˈdē-nə; -ᵊn-ə
or megaduodenums
: a congenital or acquired dilation and elongation of the duodenum with hypertrophy of all layers that presents as a feeling of gastric fullness, epigastric pain, belching, heartburn, and nausea with vomiting sometimes of food eaten 24 hours before
Cite this Entry
“Megaduodenum.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/megaduodenum. Accessed 8 Jul. 2026.
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