Dictionary![]() ![]() stig•mas•ter•olPronunciation: (stig-mas'tu-rôl", -rōl"), [key] —n. Biochem. a crystalline, water-insoluble steroid, C29H48O, present in soybeans or calabar beans, used chiefly as a raw material in the manufacture of progesterone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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