teratocarcinoma

noun

te·​rato·​car·​ci·​no·​ma ˌter-ə-tō-ˌkär-sə-ˈnō-mə How to pronounce teratocarcinoma (audio)
: a malignant teratoma
especially : one involving germinal cells of the testis

Word History

Etymology

terato- + carcinoma

First Known Use

circa 1946, in the meaning defined above

Time Traveler
The first known use of teratocarcinoma was circa 1946

Rhymes for teratocarcinoma

See All Rhymes for teratocarcinoma

Browse Nearby Words

terato-
teratocarcinoma
teratogen
See all Nearby Words

Cite this Entry

“Teratocarcinoma.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/teratocarcinoma. Accessed 31 Oct. 2025.

Copy Citation

Share

Medical Definition

teratocarcinoma

noun
te·​rato·​car·​ci·​no·​ma ˌter-ət-ō-ˌkärs-ᵊn-ˈō-mə How to pronounce teratocarcinoma (audio)
plural teratocarcinomas also teratocarcinomata -mət-ə How to pronounce teratocarcinoma (audio)
: a malignant teratoma
especially : one involving germinal cells of the testis or ovary
Love words? Need even more definitions?

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

Popular in Grammar & Usage

See More

'Affect' vs. 'Effect'

Using Bullet Points ( • )

'A' or 'an'? What about before 'h'? An Indefinite Article Guide

The Difference Between 'i.e.' and 'e.g.'

What’s the difference between ‘cemetery’ and ‘graveyard’?
See More

Popular in Wordplay

See More

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)

Ten More Words from Taylor Swift Songs

Why do we 'bury the lede?'

'Za' and 9 Other Words to Help You Win at SCRABBLE
See More

Popular

See More

'Affect' vs. 'Effect'

Skibidi, Mog & More: Gen Alpha Slang

13 Wonderful Words That You're Not Using (Yet)
See More

Games & Quizzes

See All
Play Quordle: Guess all four words in a limited number of tries. Each of your guesses must be a real 5-letter word.
Quordle Can you solve 4 words at once?
Play Blossom: Solve today's spelling word game by finding as many words as you can using just 7 letters. Longer words score more points.
Blossom Pick the best words!
Play Missing Letter: a crossword with a twist. Each of the 25 puzzle words start with a different letter of the alphabet. Which letter is missing?
The Missing Letter A daily crossword with a twist
pastel colored puzzle piece speech bubbles with shadows
Quiz: Find the Missing Link Figure out the word that fits both halves of the ...
See All