tumor

noun tu·mor \ ˈtü-mər , ˈtyü- \
Updated on: 11 Dec 2017

Definition of tumor

1 : an abnormal benign or malignant new growth of tissue that possesses no physiological function and arises from uncontrolled usually rapid cellular proliferation called also neoplasm
2 : a swollen or distended part
  • … houses that bulged with the tumors and warts of … ornamental architecture …
  • —W. A. White

tumoral

play \-mə-rəl\ adjective

tumorlike

play \-mər-ˌlīk\ adjective

Examples of tumor in a Sentence

  1. the scan showed a small tumor in her abdomen

Recent Examples of tumor from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'tumor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

Origin and Etymology of tumor

Middle English tumour, from Latin tumor, from tumēre


TUMOR Defined for English Language Learners

tumor

noun

Definition of tumor for English Language Learners

  • : a mass of tissue found in or on the body that is made up of abnormal cells


TUMOR Defined for Kids

tumor

noun tu·mor \ ˈtü-mər , ˈtyü- \

Definition of tumor for Students

: an abnormal growth of body tissue

Medical Dictionary

tumor

noun tu·mor
variants: or chiefly British tumour play \ˈt(y)ü-mər\

medical Definition of tumor

: an abnormal benign or malignant new growth of tissue that possesses no physiological function and arises from uncontrolled usually rapid cellular proliferation — see cancer 1, carcinoma, sarcoma

tumorlike

play \-ˌlīk\ adjective


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