psyllium seed

noun

Medical Definition of psyllium seed

: 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 fleaseed, plantago seed, psyllium

— see metamucil

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“Psyllium seed.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/psyllium%20seed. Accessed 27 Nov. 2020.

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