1
: an abnormal benign or malignant new growth of tissue that possesses no physiological function and arises from uncontrolled usually rapid cellular proliferation
called also neoplasm
2
: a swollen or distended part
… houses that bulged with the tumors and warts of … ornamental architecture …—
W. A. White
W. A. White
Examples of tumor in a Sentence
the scan showed a small tumor in her abdomen
Recent Examples on the Web
If a polyp is large, suspicious, or causing symptoms, it can be removed with transurethral resection of bladder tumors (TURBT) and minimal invasive performed under anesthesia.
—James Myhre & Dennis Sifris, Md, Verywell Health, 3 Sep. 2024
Epstein died Tuesday morning at Adventist Health hospital in Glendale after months of battling a brain tumor, his younger brother, Brett Epstein, confirmed to The Times.
—Alexandra Del Rosario, Los Angeles Times, 15 Aug. 2024
Zoom in: Nearly 2 million Americans are diagnosed with solid tumor cancers each year, and surgical removal is often the first step in their treatment, the White House said.
—Shawna Chen, Axios, 15 Aug. 2024
Brain imaging of patients suspected of having idiopathic intracranial hypertension is crucial to excluding other causes of elevated CSF pressure, such as brain tumors or blood clots.
—Danielle Wilhour, Discover Magazine, 15 Aug. 2024
See all Example Sentences for tumor 
James Myhre & Dennis Sifris, Md, Verywell Health, 3 Sep. 2024
Epstein died Tuesday morning at Adventist Health hospital in Glendale after months of battling a brain tumor, his younger brother, Brett Epstein, confirmed to The Times.
—Alexandra Del Rosario, Los Angeles Times, 15 Aug. 2024
Zoom in: Nearly 2 million Americans are diagnosed with solid tumor cancers each year, and surgical removal is often the first step in their treatment, the White House said.
—Shawna Chen, Axios, 15 Aug. 2024
Brain imaging of patients suspected of having idiopathic intracranial hypertension is crucial to excluding other causes of elevated CSF pressure, such as brain tumors or blood clots.
—Danielle Wilhour, Discover Magazine, 15 Aug. 2024
See all Example Sentences for tumor
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'tumor.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near tumor
Cite this Entry
“Tumor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tumor. Accessed 11 Sep. 2024.
Copy CitationKids Definition
tumor
noun
tu·mor
ˈt(y)ü-mər 
: an abnormal mass of tissue that arises from normal tissue cells and serves no useful purpose in the body
tumorous
adjective
ˈt(y)üm-(ə-)rəs
Medical Definition
tumor
noun
tu·mor
variants
or chiefly British tumour
: an abnormal benign or malignant new growth of tissue that possesses no physiological function and arises from uncontrolled usually rapid cellular proliferation see cancer sense 1, carcinoma, sarcoma
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