[mez-uh-thee-lee-uh m, mes-, mee-zuh-, -suh-] /ˌmɛz əˈθi li əm, ˌmɛs-, ˌmi zə-, -sə-/

noun, plural mesothelia
[mez-uh-thee-lee-uh, mes-, mee-zuh-, -suh-] /ˌmɛz əˈθi li ə, ˌmɛs-, ˌmi zə-, -sə-/ (Show IPA). Anatomy, Embryology.
of mesodermal origin, which lines the body cavities.
noun (pl) -liums, -lia (-lɪə)
epithelium, derived from embryonic mesoderm lining body cavities

mesothelium mes·o·the·li·um (měz’ə-thē’lē-əm, měs’-)
n. pl. mes·o·the·li·a (-lē-ə)
The layer of flat cells of mesodermal origin that lines the embryonic body cavity and gives rise to the squamous cells of the peritoneum, pericardium, and pleura.
mes’o·the’li·al adj.
Plural mesothelia
A layer of flattened epithelial cells that lines the membranes of closed body cavities, including the pericardium, pleurae, and peritoneum. Compare endothelium.


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