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 The protection was conferred by epithelial stem cells. Quanta Magazine, "‘Trained Immunity’ Offers Hope in Fight Against Coronavirus," 14 Sep. 2020 The result: a gastrointestinal synthetic epithelial lining system, or GSEL, which is a mixture of dopamine and minute amounts of hydrogen peroxide. Pratibha Gopalakrishna, STAT, "Scientists create a synthetic lining for the intestine to make delivering drugs easier," 26 Aug. 2020 In humans, the virus’ spike protein attaches to the ACE2 receptor on epithelial cells and enters the lungs. Smithsonian Magazine, "Building a Mouse Squad Against COVID-19," 21 May 2020 Both endothelial cells in the blood vessel and epithelial cells in the respiratory tract have the same protein receptor that binds with the virus. Adrianna Rodriguez, USA TODAY, "As US hits 100K coronavirus deaths, has the US learned anything? 10 important lessons from this devastating pandemic," 27 May 2020 In some cases, the healthy epithelial cells turn into earlier-stage mesenchymal cells, break free from the tumor and become mobile in the body. Philip Ball, Scientific American, "Close-Up Views of Tumors Reveal a New Cancer Biology," 21 Apr. 2020 As seen in the image above, the central gray core is the human epithelial tissue that makes up the outer flesh of our mouth muscles. Popular Science, "This photo confirms that your tongue is basically a microbe party," 20 Apr. 2020 For instance, Actinomyces bacteria, in red, grow close to the epithelial tissue of the tongue, shown in gray, while Rothia bacteria, in cyan, form long patches between other communities. Rodrigo Pérez Ortega, Science | AAAS, "Don’t freak out: These are the microbes living on your tongue," 24 Mar. 2020 These proteins are all present on epithelial, or surface, cells of the human airway, presenting easy targets to any airborne virus. Quanta Magazine, "The Animal Origins of Coronavirus and Flu," 25 Feb. 2020

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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Statistics for epithelial

Last Updated

28 Sep 2020

Cite this Entry

“Epithelial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epithelial. Accessed 29 Oct. 2020.

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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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