hyaluronic acid
noun
hy·al·uron·ic acid
ˌhī(-ə)l-yu̇-ˈrä-nik 
: 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
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During winter, Chang also suggests switching to richer creams instead of lotions or gels and layering humectants like glycerin or hyaluronic acid with occlusives to help seal moisture in.
—
Avery Newmark, AJC.com, 5 Feb. 2026
The sport does not prohibit hyaluronic acid, a natural substance that can be used to treat ailments such as osteoarthritis and dry eye, or as a cosmetic filler.
—Peter Sblendorio, Mercury News, 5 Feb. 2026
Hydrators like hyaluronic acid and glycerin can temporarily plump skin, making crepey texture look smoother.
—Christa Joanna Lee, Allure, 5 Feb. 2026
Over-the-counter vaginal moisturizers, including products with hyaluronic acid, and water- or silicone-based lubricants, are other options—however, these items won’t address the root of dryness, which is declining estrogen.
—Erica Sweeney, SELF, 4 Feb. 2026
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Avery Newmark, AJC.com, 5 Feb. 2026
The sport does not prohibit hyaluronic acid, a natural substance that can be used to treat ailments such as osteoarthritis and dry eye, or as a cosmetic filler.
—Peter Sblendorio, Mercury News, 5 Feb. 2026
Hydrators like hyaluronic acid and glycerin can temporarily plump skin, making crepey texture look smoother.
—Christa Joanna Lee, Allure, 5 Feb. 2026
Over-the-counter vaginal moisturizers, including products with hyaluronic acid, and water- or silicone-based lubricants, are other options—however, these items won’t address the root of dryness, which is declining estrogen.
—Erica Sweeney, SELF, 4 Feb. 2026
See All Example Sentences for hyaluronic acid
Cite this Entry
“Hyaluronic acid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyaluronic%20acid. Accessed 16 Feb. 2026.
Copy CitationMedical Definition
hyaluronic acid
noun
hy·al·uron·ic acid
ˌhīl-yu̇-ˌrän-ik-
ˌhī-əl-yu̇-
ˌhī-əl-yu̇-
: 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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