Definition of psyllium
: 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
Recent Examples of psyllium from the Web
Take a fiber supplement with psyllium, the insoluble husks of fiber, to keep bowels moving.
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Origin and Etymology of psyllium
New Latin psyllium, from Greek psyllion fleawort, from psylla
First Known Use: 1598
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