hyaluronic acid

noun

hy·​al·​uron·​ic acid ˌhī(-ə)l-yu̇-ˈrä-nik How to pronounce hyaluronic acid (audio)
: a viscous glycosaminoglycan chiefly of the matrix of tissues that occurs especially in the vitreous humor, umbilical cord, synovial fluid, and loose connective tissue and serves especially as a structural element and lubricant

Examples of hyaluronic acid in a Sentence

Recent Examples on the Web
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.
There’s hydrating hyaluronic acid, caffeine for puffiness, soothing aloe leaf, and green tea for antioxidant protection. Marie Lodi, StyleCaster, 13 Oct. 2025 It’s made of 75% water, plus hydrating aloe vera, hyaluronic acid, glycerin, and antioxidant-rich green tea to keep lips soft and plump. Lily Wohlner, Allure, 10 Oct. 2025 Each pad, though, is drenched in a cocktail of red wine extract, lactic acid, resveratrol, raspberry extract, and hyaluronic acid for topical treatments, too. Conçetta Ciarlo, Vogue, 8 Oct. 2025 Tarte’s Maracuja Juicy Lip Balm Gloss, which grants just this kind of effect with its complex of hyaluronic acid and over 10 superfruits that smooth out lip lines and make for a plumper-looking pout. Stacia Datskovska, Footwear News, 8 Oct. 2025 See All Example Sentences for hyaluronic acid

Word History

Etymology

International Scientific Vocabulary

First Known Use

1934, in the meaning defined above

Time Traveler
The first known use of hyaluronic acid was in 1934

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Cite this Entry

“Hyaluronic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyaluronic%20acid. Accessed 18 Oct. 2025.

Medical Definition

hyaluronic acid

noun
hy·​al·​uron·​ic acid ˌhīl-yu̇-ˌrän-ik- How to pronounce hyaluronic acid (audio) ˌhī-əl-yu̇- How to pronounce hyaluronic acid (audio)
: a viscous glycosaminoglycan that occurs especially in the vitreous body, the umbilical cord, and synovial fluid and as a cementing substance in the subcutaneous tissue

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