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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It’s packed with ceramides, hyaluronic acid, and vitamin D to nourish, plump, and deeply hydrate your complexion.
—
Olivia Cefalu, InStyle, 23 May 2026
Gregg Renfrew’s newest product features hyaluronic acid and jojoba esters for a moisturizing dose of color.
—Noor Lobad, Footwear News, 23 May 2026
Plus, five types of hyaluronic acid, squalane, and antioxidant-rich botanicals like white ginseng and a mulberry complex replenish moisture and support the skin barrier with every pat.
—Christa Joanna Lee, Allure, 22 May 2026
In addition to these benefits of hyaluronic acid, the ingredient can address fine lines and wrinkles.
—Jessie Quinn, StyleCaster, 15 May 2026
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Olivia Cefalu, InStyle, 23 May 2026
Gregg Renfrew’s newest product features hyaluronic acid and jojoba esters for a moisturizing dose of color.
—Noor Lobad, Footwear News, 23 May 2026
Plus, five types of hyaluronic acid, squalane, and antioxidant-rich botanicals like white ginseng and a mulberry complex replenish moisture and support the skin barrier with every pat.
—Christa Joanna Lee, Allure, 22 May 2026
In addition to these benefits of hyaluronic acid, the ingredient can address fine lines and wrinkles.
—Jessie Quinn, StyleCaster, 15 May 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 25 May. 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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