any of a group of compounds including the sterols, bile acids, and sex hormones, characteristically having the carbon-atom ring structure of the sterols; specif., an anabolic steroid
Any of numerous naturally occurring or synthetic fat-soluble organic compounds having as a basis 17 carbon atoms arranged in four rings and including the sterols and bile acids, adrenal and sex hormones, certain natural drugs such as digitalis compounds, and the precursors of certain vitamins.