hexestrol

noun
hex·​es·​trol | \ ˈhek-sə-ˌstrȯl How to pronounce hexestrol (audio) , -ˌstrōl How to pronounce hexestrol (audio) \
variants: or chiefly British hexoestrol \ ˈhek-​sē-​ˌstrȯl How to pronounce hexoestrol (audio) , -​ˌstrōl How to pronounce hexoestrol (audio) \

Medical Definition of hexestrol

: a synthetic derivative C18H22O2 of diethylstilbestrol