ep·​i·​the·​li·​al ˌe-pə-ˈthē-lē-əl How to pronounce epithelial (audio)
: of or relating to epithelium
intestinal epithelial cells
epithelial ovarian cancer

Examples of epithelial in a Sentence

Recent Examples on the Web The prostate gland has an epithelial part where the gland cells make PSA and prostate-specific antigens; those epithelial cells or stem cells that regenerate the gland cells are the source of cancer. Dominique Fluker, Essence, 8 Feb. 2024 Its effectiveness on the digestive system ensures that the immune system is improved, which happens through the intestines' epithelial lining repair. Amber Smith, Discover Magazine, 6 Jan. 2024 To make that connection, the team demonstrated that two distinct symmetries coexist in epithelial tissue. WIRED, 10 Dec. 2023 Naegleria fowleri enters your body through the nose, crosses the epithelial lining and then makes a beeline up the olfactory nerve to the frontal part of the brain. Avery Hurt, Discover Magazine, 3 Oct. 2023 Research indicates that SARS-CoV-2—the virus that causes COVID—can directly attack the epithelial cells that line the GI tract, entering via the molecular doorway of angiotensin‐converting enzyme 2 (ACE2). Katrin Legg, Scientific American, 24 June 2021 These are epithelial cells, which form the inner layers of the tentacle; i-cells, which help the jellyfish sense and handle food; and stinging nematocytes. Elizabeth Rayne, Ars Technica, 3 Jan. 2024 Precancerous epithelial cells in the mouth and the cervix, in particular, are likely to develop into cancer. IEEE Spectrum, 8 Jan. 2024 Long-term exposure to heat and ozone causes a reaction with the epithelial cells in the lungs. Sarah Bowman, The Indianapolis Star, 21 Aug. 2023

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'epithelial.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

First Known Use

1845, in the meaning defined above

Time Traveler
The first known use of epithelial was in 1845

Dictionary Entries Near epithelial

Cite this Entry

“Epithelial.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/epithelial. Accessed 28 May. 2024.

Medical Definition


ep·​i·​the·​li·​al ˌep-ə-ˈthē-lē-əl How to pronounce epithelial (audio)
: of or relating to epithelium
epithelial cells

More from Merriam-Webster on epithelial

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