mesothelioma

noun, plural mes·o·the·li·o·mas, mes·o·the·li·o·ma·ta [mez-uh-thee-lee-oh-muh-tuh, mes-, mee-zuh-, -suh-] /ˌmɛz əˌθi liˈoʊ mə tə, ˌmɛs-, ˈmi zə-, -sə-/. Pathology.

1. a malignant tumor of the covering of the lung or the lining of the pleural and abdominal cavities, often associated with exposure to asbestos.

noun plural -mata (-mətə) or -mas

1. a tumour of the epithelium lining the lungs, abdomen, or heart: often associated with exposure to asbestos dust

n. pl. mes•o•the•li•o•mas

1. A rare neoplasm derived from the lining cells of the pleura and peritoneum and growing as a thick sheet composed of spindle cells or fibrous tissue covering the viscera.