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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.

If tumor cells can quickly repair that damage, they may survive treatment and continue growing.

From Science Daily • May 17, 2026

After the removal of a cancerous salivary gland tumor, Wing’s oncologist recommended chemotherapy and radiation.

From The Wall Street Journal • May 17, 2026

“By the time a tumor shows up on imaging, it’s often too late,” said Neel Talwar, an oncologist at City of Hope, who uses the test on his patients.

From The Wall Street Journal • May 14, 2026

Symptoms can vary depending on where the tumor forms in the brain.

From BBC • May 13, 2026

He peered inside Henrietta, dilated her cervix, and prepared to treat her tumor.

From "The Immortal Life of Henrietta Lacks" by Rebecca Skloot




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