mel·​a·​no·​ma | \ ˌme-lə-ˈnō-mə How to pronounce melanoma (audio) \
plural melanomas also melanomata\ ˌme-​lə-​ˈnō-​mə-​tə How to pronounce melanoma (audio) \

Definition of melanoma

1 : a tumor containing dark pigment
2 : a highly malignant tumor that starts in melanocytes of normal skin or moles and metastasizes rapidly and widely

Examples of melanoma in a Sentence

Recent Examples on the Web Mau, 54, had been battling melanoma for a year and a half, Chesterfield said, and was hospitalized when Kathleen, 51, died. Gloria Casas,, "Chris Mau, whose love of all things ‘Doctor Who’ was seen in his Blue Box Cafe in Elgin, mourned by staff, customers," 20 Apr. 2021 Reduces skin cancer risk: Early research suggests that caffeine sourced from coffee and tea may have a role in reducing the risk of developing melanoma. Stefani Sassos, Ms, Rdn, Cso, Good Housekeeping, "12 Ways Coffee May Boost Your Health and Wellness, According to Research," 1 Mar. 2021 He had been treated for many years for melanoma and kidney cancer, and was in home hospice care, said his wife, Kathy Brown. Sam Whiting, San Francisco Chronicle, "Mike Brown, Chronicle copy boy turned communications ace, dies at 73," 5 Mar. 2021 They were told the tests, performed at Yale University, showed that one daughter, Cameryn, who was 3 at the time, had a genetic mutation that put her at 60% to 80% higher risk for melanoma, and the other, Delaney, who was 5, did not. Paul Egan, Detroit Free Press, "Parents sue U-M after doctors told them wrong daughter was at high risk for cancer," 12 Feb. 2021 As detailed in a paper published later that year in Nature Nanotechnology, the research team discovered that the cowpea mosaic virus was highly effective in treating melanoma, breast, ovarian, and colon tumor models in mice. Daniel Oberhaus, Wired, "A Common Plant Virus Is an Unlikely Ally in the War on Cancer," 5 Oct. 2020 Results from multiple studies, including Bempeg and Opdivo combination in first-line melanoma and bladder cancer treatment are expected to also be out in 2021. Trefis Team, Forbes, "Nektar Therapeutics Stock Likely To See Higher Levels," 1 Mar. 2021 Den Hollander wrote that he was diagnosed with a deadly form of melanoma in 2018. Tracy Smith, CBS News, "Federal judge whose son was killed in ambush: "My son's death cannot be in vain"," 20 Feb. 2021 This is the case with pembrolizumab, an orphan drug for melanoma and gastric cancer that is currently being tested as a potential medication for Covid-19. Nicole Hassoun, Quartz, "How to fix the orphan drug problem driving up medical costs," 14 Jan. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'melanoma.' 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 melanoma

1838, in the meaning defined at sense 1

History and Etymology for melanoma

melan- (in melanosis, melanotic) + -oma

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Time Traveler for melanoma

Time Traveler

The first known use of melanoma was in 1838

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Statistics for melanoma

Last Updated

3 May 2021

Cite this Entry

“Melanoma.” Dictionary, Merriam-Webster, Accessed 9 May. 2021.

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More Definitions for melanoma



English Language Learners Definition of melanoma

medical : a type of cancer or tumor that begins as a dark spot or area on the skin


mel·​a·​no·​ma | \ ˌmel-ə-ˈnō-mə How to pronounce melanoma (audio) \
plural melanomas also melanomata\ -​mət-​ə How to pronounce melanoma (audio) \

Medical Definition of melanoma

1 : a benign or malignant skin tumor containing dark pigment
2 : a tumor of high malignancy that starts in melanocytes of normal skin or moles and metastasizes rapidly and widely

called also malignant melanoma, melanocarcinoma, melanoepithelioma, melanosarcoma

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