D defs.my
Entry 1 sense Webster, 1913

Tamoxifen

/(tă*mŏk"sĭ*fĕn)/ · Ta·mox·i·fen · IPA /təˈmɑk.sɪf.ən/
01 n. a chemical compound (C26H29NO) which is non-steroidal but physiogically active as an estrogen antagonist. It is used to treat postmenopaus…
  1. 1.
    a chemical compound (C26H29NO) which is non-steroidal but physiogically active as an estrogen antagonist. It is used to treat postmenopausal breast cancer. Chemically it is 1-p-dimethylaminoethoxyphenyl-trans-1,2-diphenyl-but-1-ene. It can be obtained as a white crystalline powder.