Dictionary.com
Thesaurus.com

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

  • tumorous adjective

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.

He is now appealing the decision to reject his reparation claims, but with two brain tumours, heart disease, and prostate cancer, he worries he is running out of time.

From BBC

Not all the tumours responded as well as the largest one, however.

From Barron's

As well as Parkinson's and RLS, the drugs are used to treat pituitary gland tumours and some mental health conditions.

From BBC

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

From Science Daily

HPV causes cells in the anal canal to grow abnormally and form tumours.

From BBC

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.