teratoma
noun
ter·a·to·ma
ˌter-ə-ˈtō-mə 
plural teratomas also teratomata
ˌter-ə-ˈtō-mə-tə
: a tumor made up of a heterogeneous mixture of tissues
Examples of teratoma in a Sentence
Recent Examples on the Web
But taking it too far produces teratomas, tumors filled with teeth and hair.
—
Tad Friend,
New Yorker,
4 Aug. 2025
The physicians scheduled Mary for surgery and determined that the masses on her ovaries were not cysts, but actually were tumors called teratomas, which typically are benign.
—
Kristen Jordan Shamus,
Freep.com,
3 July 2025
Dermoid Also referred to as a teratoma, this type of cyst can contain a collection of body tissue that may also be found in skin, hair, and even teeth.
—
Grace Gavilanes,
Glamour,
2 Jan. 2023
Perhaps the teratoma had prevented her airway from developing.
—
Christopher Hartnick,
STAT,
1 Sep. 2022
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Tad Friend,
New Yorker,
4 Aug. 2025
The physicians scheduled Mary for surgery and determined that the masses on her ovaries were not cysts, but actually were tumors called teratomas, which typically are benign.
—
Kristen Jordan Shamus,
Freep.com,
3 July 2025
Dermoid Also referred to as a teratoma, this type of cyst can contain a collection of body tissue that may also be found in skin, hair, and even teeth.
—
Grace Gavilanes,
Glamour,
2 Jan. 2023
Perhaps the teratoma had prevented her airway from developing.
—
Christopher Hartnick,
STAT,
1 Sep. 2022
Cite this Entry
“Teratoma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/teratoma. Accessed 6 Jul. 2026.
Copy CitationMedical Definition
teratoma
noun
ter·a·to·ma
ˌter-ə-ˈtō-mə
plural teratomas also teratomata
-mət-ə
: a tumor derived from more than one embryonic layer and made up of a heterogeneous mixture of tissues (as epithelium, bone, cartilage, or muscle)
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