tamoxifen

noun Pharmacology.

1. an antineoplastic drug, C26H29NO, that blocks the estrogen receptors on cancer cells, used in the treatment of breast cancer.

noun

1. a drug that antagonizes the action of oestrogen and is used to treat breast cancer and some types of infertility in women

1. An estrogen antagonist drug used to treat advanced breast cancer in women whose tumors are estrogen-dependent and to prevent breast cancer in some women who are at high risk.