dienestrol

noun
di·​en·​es·​trol | \ ˌdī-ə-ˈnes-ˌtrȯl How to pronounce dienestrol (audio) , -ˌtrōl How to pronounce dienestrol (audio) \
variants: or chiefly British dienoestrol \ ˌdī-​ə-​ˈnēs-​ How to pronounce dienoestrol (audio) \

Medical Definition of dienestrol

: a white crystalline estrogenic compound C18H18O2 structurally related to diethylstilbestrol and used topically to treat atrophic vaginitis and kraurosis vulvae