tamoxifen

T1A1M3O1X8I1F4E1N1
UK/təˈmɒk.sɪ.fɛn/US/təˈmɑk.sɪf.ən/

noun

A nonsteroidal estrogen antagonist used in the treatment of postmenopausal breast cancer and infertility in women.

Similar
estrogen antagonist
Less commonScrabble 21

Meanings

nountamoxifen (countable and uncountable, plural tamoxifens)

plural tamoxifens

  1. countableuncountablemedicineA nonsteroidal estrogen antagonist used in the treatment of postmenopausal breast cancer and infertility in women.

    Treatment with tamoxifen after surgery reduced cancer relapse rates by nearly 50 percent.

    2010, Siddhartha Mukherjee, The Emperor of All Maladies, Fourth Estate (2011), page 4

Synonyms & antonyms

nounan antagonist for estrogen that is used in the treatment of breast cancer

Similar
estrogen antagonist
Broader

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*terh₂-
  2. Proto-Indo-European*térh₂t
  3. Proto-Indo-European*tr̥h₂ónts
  4. Proto-Indo-European*tr̥h₂n̥ts
  5. Proto-Italic*trāns
  6. Proto-Italic*trāns-
  7. Latintrans-
  8. Englisht(rans)-
  9. Egyptianjmn
  10. Ancient GreekᾸ̓́μμων (Ắmmōn)
  11. LatinAmmōn
  12. Latinammoniacus
  13. Englishammonia
  14. Englisham(ine)
  15. Proto-Indo-European*h₂eḱ-der.?
  16. Ancient Greekὀξῠ́ς (oxŭ́s)
  17. Englishoxy-
  18. Proto-Indo-European*bʰeh₂-
  19. Proto-Indo-European*bʰh₂nyéti
  20. Proto-Hellenic*pʰáňňō
  21. Ancient Greekφαίνω (phaínō)
  22. Frenchphéno-
  23. Proto-Indo-European*swel-der.?
  24. Ancient Greekῡ̔́λη (hū́lē)
  25. Frenchphényle
  26. Englishphen(yl)
  27. Englishtamoxifen

From t(rans)- + am(ine) + oxy- + phen(yl).

Full word history & related roots →

Translations

Catalan tamoxifè
  • tamoxifèTranslations
Chinese Mandarin 他莫昔芬
  • 他莫昔芬 (tāmòxīfēn)Translations
Finnish tamoksifeeni
  • tamoksifeeniTranslations
Russian тамоксифен
  • тамоксифен (tamoksifen)Translations
Spanish tamoxifeno
  • tamoxifenoTranslations

Rhymes & wordplay

Anagrams

Cite this entry
APA

tamoxifen. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/tamoxifen

MLA

“tamoxifen.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tamoxifen. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “tamoxifen,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/tamoxifen.

Source: tamoxifen on Wiktionary, CC BY-SA 4.0.