: the seed of a fleawort (especially Plantago psyllium) that has the property of swelling and becoming gelatinous when moist and is used as a mild laxative
called also psyllium seed
Examples of psyllium in a Sentence
Recent Examples on the Web
The Zest capsules, for days one to 14, feature organic flax and organic pumpkin seeds, while the Zen capsules, for days 15 to 28, feature organic sesame and sunflower seeds, and organic psyllium seed husk and organic chasteberry.
—
Emily Burns, Footwear News, 3 Sep. 2019
Combining inulin and psyllium provides broader support for gut health.
—Amber J. Tresca, Verywell Health, 9 July 2025
Read More: Why Your Breakfast Should Start With a Vegetable
Some fiber supplements, such as psyllium husk and beta-glucans, have been shown to support health by improving cholesterol, digestion, and blood sugar levels, says Phillips.
—Perri Ormont Blumberg, Time, 5 June 2025
One supplement is psyllium, a type of soluble fiber that comes from the seeds of the Plantago ovata plant.
—Lauren O'Connor, Health, 3 June 2025
See All Example Sentences for psyllium
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Emily Burns, Footwear News, 3 Sep. 2019
Combining inulin and psyllium provides broader support for gut health.
—Amber J. Tresca, Verywell Health, 9 July 2025
Read More: Why Your Breakfast Should Start With a Vegetable
Some fiber supplements, such as psyllium husk and beta-glucans, have been shown to support health by improving cholesterol, digestion, and blood sugar levels, says Phillips.
—Perri Ormont Blumberg, Time, 5 June 2025
One supplement is psyllium, a type of soluble fiber that comes from the seeds of the Plantago ovata plant.
—Lauren O'Connor, Health, 3 June 2025
See All Example Sentences for psyllium
Cite this Entry
“Psyllium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/psyllium. Accessed 3 Aug. 2025.
Copy CitationMedical Definition
psyllium
noun
psyl·li·um
ˈsil-ē-əm 
1
: fleawort
2
: psyllium seed
also
: the husks of psyllium seed
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