a synthetic estrogen, CHO, used as a substitute for natural estrogens: a probable carcinogen now banned by the FDA as a food supplement for fattening cattle: abbrev. DES
Origin of diethylstilbestroldiethyl- ( from di- + ethyl) + stilbestrol
A nonsteroidal synthetic drug, C18H20O2, having estrogenic properties and used in the treatment of advanced prostate cancer. Before 1971 it was prescribed to prevent miscarriage and to treat menstrual disorders but was found to cause vaginal cancer and other reproductive abnormalities in the daughters of pregnant women so treated.