Meaning of the word tumour in English

What does tumour mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

tumour

US /ˈtuː.mɚ/
UK /ˈtʃuː.mər/

Noun

a mass of cells that grow in the body in an uncontrolled way and can cause disease

Example:
The doctor found a small tumour in her brain.
Not all tumours are cancerous; some are benign.