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tumor

[ too-mer, tyoo- ]
/ ˈtu mər, ˈtyu- /
SEE SYNONYMS FOR tumor ON THESAURUS.COM

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.

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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

Words nearby tumor

tumescent, tumid, tummler, tummy, tummy tuck, tumor, tumor angiogenic factor, tumor antigen, tumor burden, tumoricidal, tumorigenesis
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

Words related to tumor

cyst, lump, cancer, swelling, carcinoma, bump, sarcoma, tumefaction, neoplasm

Example sentences from the Web for tumor

Medical definitions for tumor

tumor
[ tōō′mər ]

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
[ tōō′mər ]

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.