Added 10 October 2026 diethylstilboestrol /dʌɪˌiː.θʌɪl.stɪlˈbiː.stɹɒl/ noun Categories: NatureObscure Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about diethylstilboestrol at Wordnik → Where our words come from → A potent estrogen used in medicine and in feed for livestock and poultry. Related Words: stilbestrolstilboestroldiethylstilbestroldesdiethylstilbesterolfosfestroldihydrodiethylstilbestrolmethestrolbenzestrolethinyloestradiolgestodenehexestrol Back to today's word