mesoappendix

noun
me·​so·​ap·​pen·​dix | \ -ə-ˈpen-diks How to pronounce mesoappendix (audio) \
plural mesoappendixes or mesoappendices\ -​də-​ˌsēz How to pronounce mesoappendices (audio) \

Medical Definition of mesoappendix

: the mesentery of the vermiform appendix