noun, plural mes·o·ap·pen·dix·es, mes·o·ap·pen·di·ces [mez-oh-uh–pen-di-seez, mes-, mee-zoh-, -soh-] /ˌmɛz oʊ əˈpɛn dɪˌsiz, ˌmɛs-, ˌmi zoʊ-, -soʊ-/. Anatomy.
- the mesentery of the vermiform appendix.
n.
- The short mesentery of the appendix lying behind the terminal ileum.