ad·​e·​no·​ma ˌa-də-ˈnō-mə How to pronounce adenoma (audio)
plural adenomas also adenomata ˌa-də-ˈnō-mə-tə How to pronounce adenoma (audio)
: a benign tumor of a glandular structure or of glandular origin
adenomatous adjective

Examples of adenoma in a Sentence

Recent Examples on the Web Tumors most often develop in the cortex of the adrenal gland—the two main types are adenomas (benign or non-cancerous tumors) and carcinomas (malignant or cancerous tumors). Korin Miller, Health, 15 Dec. 2023 Key Takeaways One rare complication that can occur from taking hormonal birth control is the development of benign or non-cancerous growths on the liver called hepatic adenomas. Alyssa Hui, Verywell Health, 3 Aug. 2023 Yet Colorectal cancers often develop from benign tumors called adenomas. Claire Bugos, Verywell Health, 30 May 2023 In the Nordic study, the adenoma detection rate (ADR) was 31 percent on average. Theresa Sullivan Barger, Discover Magazine, 17 Dec. 2022 During a 2008 colonoscopy, President Biden had another tubular adenoma removed. Colleen Stinchcombe, SELF, 29 Nov. 2021 But less is known about how yogurt might impact the potential for people to develop adenomas. Reuters, The Mercury News, 3 July 2019 The increased size of the thyroid glands can cause non-cancerous tumors called adenoma., 13 Aug. 2019 Cologuard is not for everyone; not for high risk individuals, including those with a family history of colorectal cancer, a personal history of colorectal cancer or advanced adenoma, IBD and certain hereditary syndromes. Ashley Davidson, USA TODAY, 12 June 2018 See More

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

Word History


probably borrowed from German Adenom, Adenoma, from Greek aden-, adḗn "gland" + German -om, New Latin -oma -oma — more at adeno-

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of adenoma was in 1934

Dictionary Entries Near adenoma

Cite this Entry

“Adenoma.” Dictionary, Merriam-Webster, Accessed 29 Feb. 2024.

Medical Definition


ad·​e·​no·​ma ˌad-ᵊn-ˈō-mə How to pronounce adenoma (audio)
plural adenomas also adenomata -mət-ə How to pronounce adenoma (audio)
: a benign tumor of a glandular structure or of glandular origin
adenomatous adjective

More from Merriam-Webster on adenoma

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