# tamoxifen

> English word · Noun · IPA /təˈmɒk.sɪ.fɛn/ · frequency rank #57,756

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

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

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/tamoxifen