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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.

Removal of the tumor was scheduled for two months later, so Duong went home to his family for the weekend.

From Los Angeles Times • Mar. 30, 2026

This study was conducted using tumor tissue maintained outside the body.

From Science Daily • Mar. 27, 2026

As a result, the conditions become more favorable for tumor growth and tumour metastasis.

From Science Daily • Mar. 25, 2026

Genetic and epigenetic changes can reactivate biological programs that are normally turned off after early development, ultimately driving tumor formation.

From Science Daily • Mar. 21, 2026

But it was the best of times for science in that this very peculiar tumor gave rise to the HeLa cell line.

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