noun
tumour
noun
1
(British spelling) An abnormal mass of tissue that grows in the body, which may be benign or cancerous.
"Surgeons successfully removed the tumour before it could spread."
How to Use Tumour
Learner’s notesIn plain EnglishThe British spelling of "tumor" — an abnormal lump or growth of tissue in the body.
UK vs US
Use "tumour" in British/Commonwealth English and "tumor" in American English.
Easily confused with
Word Forms
tumours plural
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Surgeons successfully removed the _____ before it could spread.
Etymology
From Latin tumor ("a swelling"), from tumēre ("to swell") — a distant relative of the English word "thumb."