colloidal silver

noun

Medical Definition of colloidal silver

: a preparation consisting of silver particles suspended in liquid that is sometimes used as a dietary supplement High doses of colloidal silver can turn the skin permanently blue. Though the silver is legal to sell as a dietary supplement, the Food and Drug Administration maintains it has never been tested to prove any therapeutic value.— Brigid Schulte, The Washington Post, 20 Jan. 2008

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“Colloidal silver.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/colloidal%20silver. Accessed 15 Jun. 2021.

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