tamoxifen

noun

ta·​mox·​i·​fen tə-ˈmäk-sə-ˌfen How to pronounce tamoxifen (audio)
: an estrogen antagonist C26H29NO used in the form of its citrate especially to treat postmenopausal breast cancer

Examples of tamoxifen in a Sentence

Recent Examples on the Web
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Katie Hafner: The entire tamoxifen project went underground. Katie Hafner, Scientific American, 31 Oct. 2024 Nolvadex, by the way, was tamoxifen's first brand name. Katie Hafner, Scientific American, 24 Oct. 2024 Hormonal therapies, such as tamoxifen or aromatase inhibitors, are often used to treat hormone receptor-positive breast cancers, and these medications can induce menopause-like symptoms or exacerbate them in women already in menopause. Sandra Rose Salathe, Flow Space, 3 Oct. 2024 Some ways to reduce the risk of breast cancer include keeping a healthy weight, being physically active, drinking alcohol in moderation or not at all and, for some people, taking medications such as tamoxifen and breastfeeding your children, if possible. Jacqueline Howard, CNN, 1 Oct. 2024 See all Example Sentences for tamoxifen 

Word History

Etymology

probably by recombination & alteration of trans-, oxy, and clomiphene

First Known Use

1972, in the meaning defined above

Time Traveler
The first known use of tamoxifen was in 1972

Dictionary Entries Near tamoxifen

Cite this Entry

“Tamoxifen.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tamoxifen. Accessed 16 Nov. 2024.

Medical Definition

tamoxifen

noun
ta·​mox·​i·​fen ta-ˈmäk-si-ˌfen How to pronounce tamoxifen (audio)
: a selective estrogen receptor modulator that acts as an estrogen antagonist in breast tissue and is administered orally in the form of its citrate C26H29NO·C6H8O7 especially to treat breast cancer or reduce the risk of its development or reoccurrence see nolvadex

More from Merriam-Webster on tamoxifen

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