a crystalline, water-insoluble steroid, C29H48O, present in soybeans or calabar beans, used chiefly as a raw material in the manufacture of progesterone.
Main Entry: stig·mas·ter·ol Pronunciation: stig-'mas-t&-"rol, -"rOl Function: noun : a crystalline sterolC29H48O obtained especially from the oils of Calabar beans and soybeans