cho·​rio·​car·​ci·​no·​ma ˌkȯr-ē-(ˌ)ō-ˌkär-sə-ˈnō-mə How to pronounce choriocarcinoma (audio)
: a malignant tumor typically developing in the uterus from the trophoblast

Examples of choriocarcinoma in a Sentence

Recent Examples on the Web Even more rarely, the molar tissue develops into choriocarcinoma, a type of cancer that may require chemotherapy and other cancer-fighting drugs.2 Key Takeaways Hearing about molar pregnancies and their complications can be scary. ​wendy Wisner, Parents, 15 Sep. 2023 But just 18 months after getting sober — and regaining custody of her daughters — she was hit with a devastating setback: choriocarcinoma, a fast-growing cancer that occurs in the uterus and followed a tubular pregnancy. Michelle Tauber,, 6 June 2019 Around half of women who have a molar-type pregnancy go on to develop a very rare womb cancer called choriocarcinoma, due to the growth of the abnormal cells. Fox News, 26 Apr. 2018 She was diagnosed with stage IV choriocarcinoma, a rare form of uterine cancer that can form during pregnancy. Jane Bianchi, Woman's Day, 7 Aug. 2017

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'choriocarcinoma.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


New Latin, from chorion + carcinoma

First Known Use

1901, in the meaning defined above

Time Traveler
The first known use of choriocarcinoma was in 1901

Dictionary Entries Near choriocarcinoma

Cite this Entry

“Choriocarcinoma.” Dictionary, Merriam-Webster, Accessed 5 Dec. 2023.

Medical Definition


cho·​rio·​car·​ci·​no·​ma -ˌkärs-ᵊn-ˈō-mə How to pronounce choriocarcinoma (audio)
plural choriocarcinomas also choriocarcinomata -mət-ə How to pronounce choriocarcinoma (audio)
: a malignant tumor derived from trophoblastic tissue consisting of syncytiotrophoblasts and cytotrophoblasts that develops typically in the uterus following pregnancy, miscarriage, or abortion especially when associated with a hydatidiform mole or rarely in the testes or ovaries chiefly as a component of a mixed germ-cell tumor

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