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

Definition of epithelial

: of or relating to epithelium intestinal epithelial cells epithelial ovarian cancer

Examples of epithelial in a Sentence

Recent Examples on the Web In cell cultures of lung epithelial cells, Binder tested whether the larger numbers of MDA5s, as observed in children, might preserve the interferon reaction. Lars Fischer, Scientific American, 26 Aug. 2021 Another signal, transmitted through molecules called cytokines, gets a message to the circulatory system’s epithelial lining. Dhruv Khullar, The New Yorker, 11 Aug. 2021 His suspicion, though, was that the process couldn’t begin unless the innate immune system—with its interferons, cytokines, and epithelial cells—had sounded its alarms first. Dhruv Khullar, The New Yorker, 11 Aug. 2021 To study this cellular defense mechanism, MacMicking and his colleagues infected human epithelial cells with Salmonella, the germ responsible for food-poisoning. Shi En Kim, Smithsonian Magazine, 20 July 2021 The organoids are about 2 millimeters in diameter and include the main types of cells typically present in this stage of development: cardiomyocytes, epithelial cells, fibroblasts, and epicardium. Sofia Moutinho, Science | AAAS, 20 May 2021 Another signal, transmitted through molecules called cytokines, gets a message to the circulatory system’s epithelial lining. James Somers, The New Yorker, 2 Nov. 2020 One is a flat sheet of epithelial cells that have an up-and-down orientation—like the cell of a swimming choanoflagellate, which has a distinct top and bottom (see video, right). Elizabeth Pennisi, Science | AAAS, 24 Feb. 2021 The company collects mammary epithelial cells while a person is expecting. Gear Team, Wired, 13 Jan. 2021

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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Time Traveler for epithelial

Time Traveler

The first known use of epithelial was in 1845

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Dictionary Entries Near epithelial



epithelial body

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Last Updated

5 Sep 2021

Cite this Entry

“Epithelial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epithelial. Accessed 27 Oct. 2021.

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More Definitions for epithelial


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


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