sitosterol
noun
si·tos·ter·ol
sī-ˈtä-stə-ˌrȯl 
sə-,
-ˌrōl
: any of several sterols that are widespread especially in plant products (such as wheat germ or soybean oil) and are used as starting materials for the synthesis of steroid hormones
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Treatment lowered the girl’s sitosterol levels and helped her gain weight.
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Mark Johnson, USA Today, 29 Nov. 2019
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Mark Johnson, USA Today, 29 Nov. 2019
Cite this Entry
“Sitosterol.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sitosterol. Accessed 4 Nov. 2025.
Copy CitationMedical Definition
sitosterol
noun
si·tos·ter·ol
sī-ˈtäs-tə-ˌrȯl
sə-
sə-
-ˌrōl
: any of several sterols that occur widely in plant products (as wheat germ or soybean oil) and are used in the synthesis of steroid hormones
especially
: beta-sitosterol
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