teratoma

noun
ter·​a·​to·​ma | \ ˌter-ə-ˈtō-mə How to pronounce teratoma (audio) \
plural teratomas also teratomata\ ˌter-​ə-​ˈtō-​mə-​tə How to pronounce teratomata (audio) \

Definition of teratoma

: a tumor made up of a heterogeneous mixture of tissues

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Examples of teratoma in a Sentence

Recent Examples on the Web Dermoid cysts are the non-cancerous form of a type of tumor called a teratoma, according to the National Cancer Institute (NCI). Carolyn L. Todd, SELF, "Did You Know Dermoid Cysts Can Have Hair, Skin, and TEETH?," 15 Jan. 2019 LynLee suffered from a sacrococcygeal teratoma, a tumor that develops in utero and grows from the baby's tailbone. Sarah Schreiber, Good Housekeeping, "This Baby Girl Was Born Twice," 21 Oct. 2016 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

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

borrowed from German Teratom, from Greek terat-, téras "sign sent by the gods, portent, marvel, monster" + German -om -oma — more at terato-

Note: Term probably introduced by the German pathologist Rudolf virchow, no later than 1866, when it appears in the article "Ein tiefes auriculares Dermoid des Halses," Archiv für pathologische Anatomie und Physiologie und für klinische Medicin (Virchows Archiv), Band 53, p. 210.

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Time Traveler for teratoma

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The first known use of teratoma was in 1879

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Cite this Entry

“Teratoma.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/teratoma. Accessed 19 January 2020.

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More Definitions for teratoma

teratoma

noun
ter·​a·​to·​ma | \ ˌter-ə-ˈtō-mə How to pronounce teratoma (audio) \
plural teratomas also teratomata\ -​mət-​ə How to pronounce teratomata (audio) \

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 How to pronounce teratomatous (audio) \ adjective

More from Merriam-Webster on teratoma

Rhyming Dictionary: Words that rhyme with teratoma

Britannica.com: Encyclopedia article about teratoma

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