teratoma

noun
ter·​a·​to·​ma | \ˌter-ə-ˈtō-mə \
plural teratomas also teratomata\ ˌter-​ə-​ˈtō-​mə-​tə \

Definition of teratoma 

: a tumor made up of a heterogeneous mixture of tissues

Examples of teratoma in a Sentence

Recent Examples on the Web

And germ cell growths are usually benign tumors called mature teratomas, the ACS explains. Korin Miller, SELF, "The Three Types of Ovarian Cancer You Should Know," 1 Nov. 2018 The condition is so rare, Lilligard adds, that Children’s Minnesota has diagnosed just three or four fetal teratomas in the past 10 years. Emily Sohn, Washington Post, "A tumor growing on her baby’s heart forced this pregnant mom to make a terrifying choice," 29 Apr. 2018 The condition is so rare, Lilligard adds, that Children's Minnesota has diagnosed just three or four fetal teratomas in the past 10 years. The Washington Post, OregonLive.com, "Some people do better exercising at a low-intensity pace," 29 Apr. 2018 One of those possibilities was operating on a fetal teratoma, a far riskier surgery than one for spina bifida. Emily Sohn, Washington Post, "A tumor growing on her baby’s heart forced this pregnant mom to make a terrifying choice," 29 Apr. 2018 One of those possibilities was operating on a fetal teratoma, a far riskier surgery than one for spina bifida. The Washington Post, OregonLive.com, "Some people do better exercising at a low-intensity pace," 29 Apr. 2018 And hers was an even rarer type that is called a pericardial teratoma because it is found on the heart. Emily Sohn, Washington Post, "A tumor growing on her baby’s heart forced this pregnant mom to make a terrifying choice," 29 Apr. 2018 And hers was an even rarer type that is called a pericardial teratoma because it is found on the heart. The Washington Post, OregonLive.com, "Some people do better exercising at a low-intensity pace," 29 Apr. 2018 The doctor said the mass was most likely a rare tumor called a teratoma or possibly another type of tumor known as a lymphangioma. Lindsey Paradiso, SELF, "At 20 Weeks Pregnant, I Had Hope for My Baby. At 23 Weeks, I Had an Abortion.," 4 Oct. 2017

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

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First Known Use of teratoma

1879, in the meaning defined above

History and Etymology for teratoma

New Latin

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Last Updated

20 Nov 2018

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The first known use of teratoma was in 1879

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More Definitions for teratoma

teratoma

noun
ter·​a·​to·​ma | \ˌter-ə-ˈtō-mə \
plural teratomas also teratomata\ -​mət-​ə \

Medical Definition of teratoma 

: a tumor derived from more than one embryonic layer and made up of a heterogeneous mixture of tissues (as epithelium, bone, cartilage, or muscle)

Other Words from teratoma

teratomatous \ -​mət-​əs \ adjective

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