si·​tos·​ter·​ol sī-ˈtä-stə-ˌrȯl How to pronounce sitosterol (audio)
: 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

Examples of sitosterol in a Sentence

Recent Examples on the Web Treatment lowered the girl’s sitosterol levels and helped her gain weight. Mark Johnson, USA Today, 29 Nov. 2019

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'sitosterol.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History


Greek sitos grain + English sterol

First Known Use

1898, in the meaning defined above

Time Traveler
The first known use of sitosterol was in 1898

Dictionary Entries Near sitosterol

Cite this Entry

“Sitosterol.” Dictionary, Merriam-Webster, Accessed 1 Oct. 2023.

Medical Definition


si·​tos·​ter·​ol sī-ˈtäs-tə-ˌrȯl How to pronounce sitosterol (audio) sə- How to pronounce sitosterol (audio)
: 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

More from Merriam-Webster on sitosterol

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