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tumour

British  
/ ˈtjuːmə /

noun

  1. pathol

    1. any abnormal swelling

    2. a mass of tissue formed by a new growth of cells, normally independent of the surrounding structures

  2. obsolete pompous style or language

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Etymology

Origin of tumour

C16: from Latin, from tumēre to swell

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.

Earlier this year, he disclosed that surgeons had successfully removed what he described as a "small, early-stage malignant tumour" from his prostate.

From Barron's • Jun. 10, 2026

Most patients with Scolyer's form of tumour survive less than a year.

From BBC • Jun. 7, 2026

A cancer patient had the wrong part of their bowel removed during an operation after a surgeon mistook a tattoo for the site of a tumour, a report has said.

From BBC • May 24, 2026

At just 11 years old she lost her mother to a brain tumour.

From BBC • May 22, 2026

Not just because it’s Ashbury, although the place itself is bad enough, a 1960s new town, spreading like a tumour over the heart of Buckinghamshire.

From "The Girl on the Train" by Paula Hawkins

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