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mesothelioma

American

[mez-uh-thee-lee-oh-muh, mes-, mee-zuh-, -suh-] / ˌmɛz əˌθi liˈoʊ mə, ˌmɛs-, ˈmi zə-, -sə- /

noun

Pathology.

plural

mesotheliomas, mesotheliomata

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

mesothelioma British

/ ˌmɛzəʊˌθiːlɪˈəʊmə /

noun

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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of mesothelioma

First recorded in 1905–10; mesotheli(um) + -oma

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Niamh Rodgers said having the clinical nurse specialists is "invaluable" for patients and their families, adding it will provide a new level of care and expertise for mesothelioma patients.

From BBC • Feb. 19, 2026

Payouts to mesothelioma victims can top $1 million.

From Los Angeles Times • Jan. 29, 2026

The Maryland woman, Cherie Craft, claimed Johnson & Johnson’s baby powder exposed her to asbestos, leading to her diagnosis of mesothelioma in January 2024.

From The Wall Street Journal • Dec. 23, 2025

The settlement included damages relating to the risk of developing mesothelioma - a type of cancer commonly caused by asbestos exposure.

From BBC • Dec. 10, 2025

They allege that either they or a family member developed forms of ovarian cancer or mesothelioma from using J&J's Baby Powder.

From Barron's • Oct. 16, 2025

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023