malignancy

noun

ma·​lig·​nan·​cy mə-ˈlig-nən(t)-sē How to pronounce malignancy (audio)
plural malignancies
Synonyms of malignancynext
1
: the quality or state of being malignant
2
a
: exhibition (as by a tumor) of malignant qualities : virulence
b
: a malignant tumor

Examples of malignancy in a Sentence

the malignancy of the tumor The test revealed a malignancy in the patient's chest.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
And a rigorous screening protocol for LFS patients developed by David Malkin, a protege of Fraumeni and Li, helps detect early-stage malignancies, improving the odds of treating them and prolonging lives. Lawrence Ingrassia, STAT, 26 June 2026 But the tests didn’t reveal any malignancies. Beth Mole, ArsTechnica, 26 June 2026 Yes, daraxonrasib is being studied by researchers as a potential treatment for additional malignancies caused by RAS mutations. Janet Loehrke, USA Today, 8 June 2026 According to Choplain, the most likely scenario now is that Abivax will wait for the full data set, which is expected to be disclosed in October, to gain more granularity and confirm that the malignancies are not related to the treatment. Elsa Ohlen, CNBC, 2 June 2026 See All Example Sentences for malignancy

Word History

First Known Use

1601, in the meaning defined at sense 1

Time Traveler
The first known use of malignancy was in 1601

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Cite this Entry

“Malignancy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/malignancy. Accessed 5 Jul. 2026.

Kids Definition

malignancy

noun
ma·​lig·​nan·​cy mə-ˈlig-nən-sē How to pronounce malignancy (audio)
plural malignancies
1
: the quality or state of being malignant
2
: a malignant tumor

Medical Definition

malignancy

noun
ma·​lig·​nan·​cy mə-ˈlig-nən-sē How to pronounce malignancy (audio)
plural malignancies
1
: the quality or state of being malignant
2
a
: exhibition (as by a tumor) of malignant qualities : virulence
b
: a malignant tumor

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