beta-glucan

noun

beta-glu·​can ˈbā-tə-ˈglü-ˌkan How to pronounce beta-glucan (audio)
-kən
: any of several polysaccharides consisting of glucose units and including one found in endosperm cell walls of cereal grains (such as barley and oats)

Examples of beta-glucan in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Overnight Oats Overnight oats are an excellent source of soluble fiber and contain beta-glucan, which is associated with lower cholesterol and blood pressure levels. Carrie Madormo, Verywell Health, 8 June 2026 Oats Oats are rich in a type of soluble fiber called beta-glucan. Lindsey Desoto, Health, 4 June 2026 Secondly, beta-glucans, a type of soluble fiber that naturally occurs in things like oats and barley, increase the number of good bacteria, kill the bad, and lower cholesterol levels at the same time. Mélanie Nauche, Vogue, 28 May 2026 Unlike some gel moisturizers that rely on silicones for that slippery texture, this formula layers in humectants like glycerin, betaine, and beta-glucan to deliver actual hydration while still feeling featherlight and almost watery on the skin. Christa Joanna Lee, Allure, 19 May 2026 The beta-glucans in oats don't work alone, though. Kirsten Nunez, Martha Stewart, 17 May 2026

Word History

First Known Use

1966, in the meaning defined above

Time Traveler
The first known use of beta-glucan was in 1966

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Cite this Entry

“Beta-glucan.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/beta-glucan. Accessed 14 Jun. 2026.

Medical Definition

beta-glucan

noun
: any of several polysaccharides consisting of glucose units and including one found in endosperm cell walls of cereal grains (as barley and oats)
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