glutathione

noun

glu·​ta·​thi·​one ˌglü-tə-ˈthī-ˌōn How to pronounce glutathione (audio)
: a peptide C10H17N3O6S that contains one amino acid residue each of glutamic acid, cysteine, and glycine, that occurs widely in plant and animal tissues, and that plays an important role in biological oxidation-reduction processes and as a coenzyme

Examples of glutathione in a Sentence

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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.
Taking glutathione through a nebulizer may constrict the airways of people who have asthma or chronic lung conditions. — ABC News, 23 Aug. 2026 The supplement glutathione, given through an IV or an inhaler-like machine called a nebulizer, has not been proven to be safe or effective and could expose firefighters to illness if there is contamination while it’s produced, experts say. — Martha Bellisle, Los Angeles Times, 23 Aug. 2026 Peptides, glutathione, PDRN and larger molecules like hyaluronic acid struggle to cross an intact skin barrier. — Hanna Wickes, Sacbee.com, 27 July 2026 What’s more, there’s also vitamin C and glutathione for antioxidant protection, and peptides to address skin’s laxity. — Audrey Noble, Vogue, 27 July 2026 See All Example Sentences for glutathione

Word History

Etymology

International Scientific Vocabulary gluta- (from glutamic acid) + thi- + -one

First Known Use

1921, in the meaning defined above

Time Traveler
The first known use of glutathione was in 1921

Rhymes for glutathione

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Browse Nearby Words

glutaric acid
glutathione
glute
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Cite this Entry

“Glutathione.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/glutathione. Accessed 30 Aug. 2026.

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Medical Definition

glutathione

noun
glu·​ta·​thi·​one ˌglüt-ə-ˈthī-ˌōn How to pronounce glutathione (audio)
: a peptide C10H17N3O6S that contains one amino acid residue each of glutamic acid, cysteine, and glycine, that occurs widely in plant and animal tissues, and that plays an important role in biological oxidation-reduction processes and as a coenzyme

More from Merriam-Webster on glutathione

Britannica.com: Encyclopedia article about glutathione

Last Updated: - Updated example sentences
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