me·​so·​the·​li·​o·​ma ˌme-zə-ˌthē-lē-ˈō-mə How to pronounce mesothelioma (audio)
plural mesotheliomas also mesotheliomata ˌme-zə-ˌthē-lē-ˈō-mə-tə How to pronounce mesothelioma (audio)
: a usually malignant tumor derived from mesothelial tissue (such as that lining the peritoneum or pleura)

Example Sentences

Recent Examples on the Web Asbestos is a toxic mineral that can cause serious illnesses like scarring of the lungs, called asbestosis, and mesothelioma, a vicious cancer that kills most victims within a few years. Neil Bedi, ProPublica, 27 Oct. 2022 But the company has since faced at least 10 lawsuits alleging that the plant released so much asbestos into the environment that residents of the surrounding neighborhood developed mesothelioma and other ailments associated with the toxic substance. Kathleen Mcgrory, ProPublica, 27 Oct. 2022 Best Buy founder and chairman Schulze and his wife Maureen both lost their first spouses to mesothelioma cancer and donated $6 million to Moffitt Cancer Center in 2018. Jenae Barnes, Forbes, 10 July 2022 Most people who have mesothelioma are males who are exposed from working conditions. Kirbie Johnson, Allure, 15 Sep. 2022 Bergman spent much of his career representing mesothelioma victims, many of whom became sick from asbestos exposure. Brian Contrerasstaff Writer, Los Angeles Times, 1 July 2022 His wife, Julia Trumbull, said the cause was complications of mesothelioma. New York Times, 11 Feb. 2022 Additionally, firefighters showed higher rates of malignant mesothelioma when compared with the general population. Adam Terro, The Arizona Republic, 9 Feb. 2022 George Sweikhart was diagnosed with mesothelioma after 30 years of working for Southern California auto companies on brakes and other parts that can contain cancer-causing asbestos. Bob Egelko, San Francisco Chronicle, 4 Oct. 2021 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'mesothelioma.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Word History


New Latin

First Known Use

circa 1899, in the meaning defined above

Time Traveler
The first known use of mesothelioma was circa 1899

Dictionary Entries Near mesothelioma

Cite this Entry

“Mesothelioma.” Dictionary, Merriam-Webster, Accessed 3 Dec. 2022.

Medical Definition



me·​so·​the·​li·​o·​ma ˌmez-ə-ˌthē-lē-ˈō-mə, ˌmēz-, ˌmēs-, ˌmes- How to pronounce mesothelioma (audio)
plural mesotheliomas also mesotheliomata -mət-ə How to pronounce mesothelioma (audio)
: a tumor derived from mesothelial tissue (as that lining the peritoneum or pleura)

More from Merriam-Webster on mesothelioma

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Challenging Words You Should Know

  • hedgehog reading a book
  • Often used to describe “the march of time,” what does inexorable mean?
Name That Thing

You know what it looks like… but what is it called?

Universal Daily Crossword

A daily challenge for crossword fanatics.