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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Its hero ingredients include niacinamide (a.k.a. vitamin B3), known for minimizing pores and reducing fine lines, along with Premium Elastin from France, shea butter, and hyaluronic acid, all of which moisturize and plump skin for a more youthful, glowy appearance.
—
Melony Forcier, People.com, 29 July 2025
There’s also hyaluronic acid to draw in moisture and plump fine lines, plus ceramides help strengthen the skin’s moisture barrier.
—Celia Shatzman, Forbes.com, 8 July 2025
The product additionally contains niacinamide, adenosine, and low-molecular collagen for anti-aging benefits, along with hyaluronic acid, panthenol, and ceramides for hydration.
—Katie Decker-Jacoby, StyleCaster, 8 July 2025
Infused with hyaluronic acid, squalane, and natural moisturizing ingredients, this lightweight milky serum works to hydrate dry, flaky scalps—or in Ciarlo’s case, sunburned scalps.
—Kiana Murden, Vogue, 15 July 2025
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Melony Forcier, People.com, 29 July 2025
There’s also hyaluronic acid to draw in moisture and plump fine lines, plus ceramides help strengthen the skin’s moisture barrier.
—Celia Shatzman, Forbes.com, 8 July 2025
The product additionally contains niacinamide, adenosine, and low-molecular collagen for anti-aging benefits, along with hyaluronic acid, panthenol, and ceramides for hydration.
—Katie Decker-Jacoby, StyleCaster, 8 July 2025
Infused with hyaluronic acid, squalane, and natural moisturizing ingredients, this lightweight milky serum works to hydrate dry, flaky scalps—or in Ciarlo’s case, sunburned scalps.
—Kiana Murden, Vogue, 15 July 2025
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 7 Aug. 2025.
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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