[stig-mas-tuh-rawl, -rohl]
noun Biochemistry.
  1. a crystalline, water-insoluble steroid, C29H48O, present in soybeans or calabar beans, used chiefly as a raw material in the manufacture of progesterone.

Origin of stigmasterol

1920–25; < New Latin (Physo)stigma (see physostigmine) + sterol Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for stigmasterol


  1. biochem a sterol obtained from Calabar beans and soya beans and used in the manufacture of progesterone. Formula: C 29 H 47 OH

Word Origin for stigmasterol

C20: from New Latin (physo) stigma genus name of the Calabar bean + sterol; see physostigmine
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