tumor

[ too-mer, tyoo- ]
/ ˈtu mər, ˈtyu- /

noun

a swollen part; swelling; protuberance.
an uncontrolled, abnormal, circumscribed growth of cells in any animal or plant tissue; neoplasm.
Archaic.
  1. inflated pride; haughtiness.
  2. pompous language; bombast.

QUIZZES

FOR LEXICAL ALIMENTATION, TAKE THIS WORD OF THE DAY QUIZ!

Nourish your vocabulary with a refresher on the words from the week of September 14–20, 2020!
Question 1 of 7
What does “blatherskite” mean?
Also especially British, tu·mour .

Origin of tumor

1535–45; <Latin: a swelling, swollen state, equivalent to tum(ēre) to swell + -or-or1

OTHER WORDS FROM tumor

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Example sentences from the Web for tumor

Medical definitions for tumor

tumor
[ tōōmər ]

n.

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.

Scientific definitions for tumor

tumor
[ tōōmər ]

See neoplasm. See Note at cancer.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Cultural definitions for tumor

tumor

An abnormal mass of new tissue growth that serves no function in the body. Tumors are usually classified as benign or malignant and are often caused by cancer.

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.