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.
The fast-absorbing cream is formulated with beta-glucan, a humectant that delivers 20 percent more moisture retention than hyaluronic acid. Lauren Finney Harden, InStyle, 3 Mar. 2026 Oats are rich in a type of fiber called beta-glucan. Carrie Madormo, Health, 3 Mar. 2026 One big reason is that oats themselves are rich in complex carbohydrates and soluble fiber, particularly beta-glucan. Daryl Austin, USA Today, 21 Feb. 2026 In addition to protein and fiber, oat bread contains beta-glucan, a soluble fiber naturally found in oats, barley, and rye. Lindsey Desoto, Verywell Health, 17 Feb. 2026 Barrier-supporting ceramides, beta-glucan, and humectants round things out, leaving skin hydrated, clear, and balanced all over. Christa Joanna Lee, Allure, 15 Feb. 2026 Thanks to their antioxidant and anti-inflammatory compounds, including beta-glucans linked to lower LDL cholesterol and ergothioneine associated with cardiometabolic protection, mushrooms may help reduce cardiovascular risk and support overall heart health. Alessandra Signorelli, Vogue, 13 Feb. 2026 Improve Gut Health Oats are a source of insoluble and soluble fiber, like beta-glucan, a component of nutrient-rich complex carbohydrates. Randi Gollin, Martha Stewart, 18 Jan. 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 Mar. 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)
Last Updated: - Updated example sentences
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