mesoduodenum

noun
me·​so·​duo·​de·​num | \ ˌmez-ə-ˌd(y)ü-ə-ˈdē-nəm How to pronounce mesoduodenum (audio) , ˌmēz- How to pronounce mesoduodenum (audio) , ˌmēs-, ˌmes-, -d(y)u̇-ˈäd-ᵊn-əm\
plural mesoduodena\ -​ˈdē-​nə, -​ᵊn-​ə How to pronounce mesoduodena (audio) \ or mesoduodenums

Medical Definition of mesoduodenum

: the mesentery of the duodenum usually not persisting in adult life in humans and other mammals in which the developing intestine undergoes a counterclockwise rotation