WordReference Random House Unabridged Dictionary of American English © 2026
mes•o•ap•pen•dix
(mez′ō ə pen′diks, mes′-, mē′zō-, -sō-),USA pronunciation n., pl. -dix•es, -di•ces (-di sēz′).USA pronunciation [Anat.]
mes•o•ap•pen•di•ceal
(mez′ō ap′ən dish′əl, -ə pen′di sē′əl, mes′-, mē′zō-, -sō-),USA pronunciation adj.
- Anatomythe mesentery of the vermiform appendix.
- 1895–1900; meso- + appendix