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Definitions

tumor

[too-mer, tyoo-] / ˈtu mər, ˈtyu- /
NOUN
abnormal growth in animate being
Synonyms


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

An advanced tumor, Ms. Khamsi says, “might harbor thousands upon thousands of mutations,” including some that may render the cancer less susceptible to whatever medication an oncologist plans to use.

From The Wall Street Journal • Apr. 20, 2026

The findings showed that these additions made the cells "ready to attack," significantly improving their ability to destroy tumor cells.

From Science Daily • Apr. 16, 2026

Next, the FDA quibbles that patients who had every tumor injected had higher remission rates than those who had only some.

From The Wall Street Journal • Apr. 14, 2026

For example, certain biomarkers might indicate whether a tumor is likely to grow quickly or respond to specific therapies.

From Science Daily • Apr. 12, 2026

He didn’t look particularly sorry about my grandfather’s brain tumor.

From "Darius the Great Is Not Okay" by Adib Khorram




Vocabulary lists containing tumor