ep·​i·​the·​li·​al | \ ˌe-pə-ˈthē-lē-əl How to pronounce epithelial (audio) \

Definition of epithelial

: of or relating to epithelium

Examples of epithelial in a Sentence

Recent Examples on the Web

In his mid-30s, Matthew was diagnosed with adenocarcinoma, a cancer of epithelial tissue, the cells that cover the surface of the body’s organs. Mia Berry, Los Angeles Times, "Dodgers’ Walker Buehler keeps the memory of his late uncle close to his heart," 28 July 2019 The combination means that the needles can penetrate the outer layers of the cornea, the epithelial and stromal layers, which protect the eye. Kiona N. Smith, Ars Technica, "Delivering drugs directly to the eye using microneedles that dissolve," 9 Nov. 2018 For instance, epithelial cystadenomas are benign growths that can be filled with a watery or mucous-based liquid, according to the Mayo Clinic. Korin Miller, SELF, "The Three Types of Ovarian Cancer You Should Know," 1 Nov. 2018 Nasally, vitamin B12 can be absorbed across epithelial cells, which line the nasal cavities and airways. Cheryl Wischhover, Vox, "These new vape companies want you to inhale ... vitamins," 24 Oct. 2018 Our skin cells are epithelial cells, as are the cells that form the walls of many of our organs. Avery Thompson, Popular Mechanics, "Scientists Discover a New Shape That Might Be Inside You Right Now," 30 July 2018 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

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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Last Updated

6 Aug 2019

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The first known use of epithelial was in 1845

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ep·​i·​the·​li·​al | \ ˌep-ə-ˈthē-lē-əl How to pronounce epithelial (audio) \

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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authorized for issue (as a bond)

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