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. 2019
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.
See neoplasm. See Note at cancer.
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.