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

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 After a routine ultrasound at 16 weeks pregnant, the mother of two discovered that her unborn baby had sacrococcygeal teratoma, a type of tumor that develops at the base of the tailbone and occurs in one out of every 40,000 pregnancies. Caitlin Keating, PEOPLE.com, "Miracle Baby ‘Born Twice’ Celebrates First Birthday: ‘She Is Such a Blessing,’ Says Mom," 12 June 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.

See More

First Known Use of teratoma

1879, in the meaning defined above

History and Etymology for teratoma

New Latin

Keep scrolling for more

Learn More about teratoma

Statistics for teratoma

Look-up Popularity

Time Traveler for teratoma

The first known use of teratoma was in 1879

See more words from the same year

Keep scrolling for more

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

More from Merriam-Webster on teratoma

See words that rhyme with teratoma

Britannica.com: Encyclopedia article about teratoma

Comments on teratoma

What made you want to look up teratoma? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

a magnificent or impressive array

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!