View synonyms for tumor


[ too-mer, tyoo- ]


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


/ to̅o̅mər /

  1. See neoplasmSee Note at cancer


  1. 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 .

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Other Words From

  • tumor·like adjective
  • tumor·ous tumor·al adjective
  • anti·tumor adjective noun
  • anti·tumor·al adjective
  • non·tumor·ous adjective

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Word History and Origins

Origin of tumor1

First recorded in 1535–45; from Latin: “a swelling, swollen state,” equivalent to tum(ēre) “to swell” + -or noun suffix ( -or 1 )

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Example Sentences

They’re at risk for developing these tumors, and those tumors can turn into cancer, but they can also be very, very disabling.

Vaccine therapy for cancer would not be preventative, but rather would stimulate immune cells to mount a response against a patient’s tumor based on surface proteins the cancer cells have that their non-cancerous counterparts lack.

In 2018, she said she was cancer-free after a spot was detected on her lungs and she had a small tumor removed.

Many of us have cancerous tumors growing in us all the time, but our immune system gets rid of them.

NF2 is a rare genetic disorder that results in the growth of tumors on the nerves and in the brain.

From Fortune

He was brought to the Tel Aviv Sourasky Medical Center after doctors in Gaza discovered an aggressive tumor below his left knee.

But the brain tumor plaintiff does not have to say what he would have done.

Properly functioning, fully active RB can be thought of as having anti-tumor effects.

His tumor had spread, and the next six years became a painful game of catch-up, one that he ultimately failed.

A few years later, Baum posited that the math behind tumor growth looked more like chaos theory than anything else.

It would be safer to remove every tumor of the breast at an early date.

One of my mules which drank veruga water was attacked by a large tumor on the leg.

Every pocket is a latent distortion—put something into it and you have a swelling, a tumor.

Lily was suffering from a malignant tumor involving the hip, which surgeons in consultation had decided should be removed.

On proceeding to examine the tumor, he found a plaster covering it.


Related Words




tummy tucktumorigenesis