- a swollen part; swelling; protuberance.
- an uncontrolled, abnormal, circumscribed growth of cells in any animal or plant tissue; neoplasm.
- inflated pride; haughtiness.
- pompous language; bombast.
Also especially British, tu·mour.
Origin of tumor
1535–45; < Latin: a swelling, swollen state, equivalent to tum(ēre) to swell + -or -or1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for tumor
His tumor had spread, and the next six years became a painful game of catch-up, one that he ultimately failed.Why Smart People Are Dumb Patients
July 14, 2014
But the reasoning only made sense if the tumor grew in a linear, predictable way.
These drugs block the growth and spread of cancer by interfering with specific molecules involved in tumor growth.
The tumor in his colon had spread to four of his lymph nodes and penetrated the bowel wall.
Harry Hudson was about to launch a music career when he found a tumor the size of a grapefruit in his chest.When Harry Met Cancer
April 10, 2014
Diabetes, tuberculosis, cancer of the stomach, tumor of the brain.Life Sentence
He had examined the tumor in the breast, and knew that it could end in but one way.
If the tumor is large, more than one incision may be necessary.Special Report on Diseases of the Horse
United States Department of Agriculture
The name of a syphilitic swelling or tumor is gumma (plural, gummata).Woman
William J. Robinson
It would be safer to remove every tumor of the breast at an early date.The Eugenic Marriage, Vol. 3 (of 4)
W. Grant Hague
Word Origin and History for tumor
1540s, from Latin tumor "swelling, condition of being swollen," from tumere "to swell" (see thigh).
Online Etymology Dictionary, © 2010 Douglas Harper
- An abnormal growth of tissue resulting from uncontrolled, progressive multiplication of cells and serving no physiological function; a neoplasm.
- A swollen part; a swelling.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.