ep·​i·​the·​li·​al | \ˌe-pə-ˈthē-lē-əl \

Definition of epithelial 

: of or relating to epithelium

Examples of epithelial in a Sentence

Recent Examples on the Web

Cystic fibrosis is caused by a defective chloride channel in epithelial cells, making mucus much thicker than in people without the disease. Nyssa Kruse, Courant Community, "Avon Police Organize Avon Mountain Challenge To Benefit Cystic Fibrosis Charity," 3 June 2018 Obviously, norovirus attacks intestinal epithelial cells, the specialized cells that line tubes within the body. Diana Gitig, Ars Technica, "We’ve found the cells norovirus targets—we just don’t know what they do," 14 Apr. 2018 The women had recurrent advanced epithelial ovarian cancer, which has an average five-year survival rate of 17%, according to the American Cancer Society. Susan Scutti, CNN, "Ovarian cancer vaccine shows promising results in human study," 11 Apr. 2018 The outside of the structure would be repopulated with mesenchymal stem cells from the patient's own bone marrow, and the inside seeded with their epithelial cells. Matt Warren, Science | AAAS, "Two controversial stem cell trials could harm patients, critics say," 29 Mar. 2018 Lead has long been known to damage the epithelial cells lining the body's blood vessels, which increases the likelihood of developing plaques that can then cause a heart attack, said Landrigan. Mark Lieber, CNN, "US deaths from lead exposure 10 times higher than thought, study suggests," 12 Mar. 2018 In petri dishes, however, the toxin damages DNA and triggers cancerous changes in the epithelial cells that give rise to colon cancer. Gina Kolata, New York Times, "Gut Microbes Combine to Cause Colon Cancer, Study Suggests," 1 Feb. 2018 Lab tests performed by the California Department of of Fish and Wildlife came back over the past week to reveal that epithelial cells from the big cat’s saliva were in the blood drop found near the remote home in the 800 block of Native Sons Road. Robert Salonga, The Mercury News, "Wildlife officials: DNA confirms mountain lion took dog from Pescadero bedroom," 25 Apr. 2017 Dry AMD is a breakdown or thinning of retinal pigment epithelial cells, which support the light-sensitive cells. Bradley J. Fikes, sandiegouniontribune.com, "Dry macular degeneration stopped with low glycemic index diet in mouse study," 15 May 2017

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

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First Known Use of epithelial

1845, in the meaning defined above

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The first known use of epithelial was in 1845

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More Definitions for epithelial


ep·​i·​the·​li·​al | \ˌep-ə-ˈthē-lē-əl \

Medical Definition of epithelial 

: of or relating to epithelium epithelial cells

More from Merriam-Webster on epithelial

Britannica English: Translation of epithelial for Arabic Speakers

Comments on epithelial

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something that serves to warn or remind

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