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tumor definition

tu·mor (to̵̅o̅′mər, tyo̵̅o̅′-)

noun

    1. a swelling on some part of the body
    2. a mass of new tissue growth independent of its surrounding structures, having no physiological function; neoplasm: such tumors are classified as benign or malignant
  2. Obsolete high-flown language; bombast

Etymology: L, a swelling < tumere, to swell < IE base *tēu-, to swell > thumb

Brit. sp. tumour tu′·mour

Related Forms:

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

Alternate definitions:

medical tumor definition - medical

tumor Synonyms

tumor

n.

neoplasm, tumefaction, cyst, malignant tumor, benign tumor; see also growth 3, swelling.


Webster's New World Roget's A-Z Thesaurus Copyright © 1999 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

tumor Usage Examples

Preposition: of

  • testis: AB - We reported the case of a 35-year-old man with Klinefelter's syndrome and a malignant Leydig cell tumor of the testis.

Adjective modifier

  • malignant: Only malignant tumors have the capacity to move to new locations.

Modifies a noun

  • suppressor: AB - Defects in PTEN, a tumor suppressor, have been found in cancers arising in a variety of human tissues.

Noun used with modifier

  • germ: At that time, germ cell tumors were the cause of death in 400 males per year in Germany.
tumor usage examples (more)

The word usage examples above have been gathered from various sources to reflect current and historical usage. They do not represent the opinions of YourDictionary.com.

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MLA Style

"tumor." Webster's New World College Dictionary. 2009

  • Your Dictionary. 4 July 2009
  • <www.yourdictionary.com/tumor>

APA Style

tumor. (2009). In Webster's New World College Dictionary

  • Retrieved July 4th, 2009, from www.yourdictionary.com/tumor

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