A class of organic compounds having a structure of 17 carbon atoms arranged in four rings; they are lipids, and occur naturally as sterols, bile acids, adrenal and sex hormones, and some vitamins; many drugs are synthetic steroids.
User Defined Definitions
"any of several fat-soluble organic compounds having as a basis 17 carbon atoms in four rings; many have important physiological effects"
"any hormone affecting the development and growth of sex organs"