tamoxifen
From Longman Dictionary of Contemporary Englishtamoxifenta‧mox‧i‧fen /təˈmɒksəfen $ -ˈmɑːk-/ noun [uncountable] a drug that is used to treat breast cancerExamples from the Corpustamoxifen• The greatest difference had been made by the hormonal drug tamoxifen, which was developed in Britain.• The drug tamoxifen, first described in the late 1960s, has some value as a palliative in patients with oestrogen-dependent tumours.Origin tamoxifen (1900-2000) trans- + amine ( → AMINO ACID) + oxy- (from oxygen) + phenol type of chemical compound ((19-21 centuries))