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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.

See Examples For:

"For 18 years of married life I've always got out of bed and made my wife a cup of coffee," Hibbert said, "and I wasn't going to let this tumour stop that."

From BBC Aug. 26, 2026

At this point the tumour was close but hidden behind layers of bone and tough membrane.

From BBC Aug. 26, 2026

The world's first patient to have brain surgery with live artificial intelligence assistance has successfully had his tumour removed.

From BBC Aug. 26, 2026

She underwent a second surgery the day after that, with surgeons removing most of the tumour during a 10-hour procedure, where it was confirmed to be a pilocytic astrocytoma.

From BBC Aug. 24, 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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