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

Recent Examples on the Web

It’s also stacked with reliable tone-evening ingredients like tranexamic acid, niacinamide, and arbutin, plus supportive ingredients like ceramides, panthenol, and hyaluronic acid to keep skin hydrated and balanced. —Christa Joanna Lee, Allure, 9 May 2026

Meanwhile, soybean extract and hydrolyzed hyaluronic acid boost hydration levels. —Rosa Jisoo Pyo, Vogue, 8 May 2026

Low-molecular hyaluronic acids seep deep into skin to attract moisture, keeping it soft, supple, and supremely satisfied. —Adam Hurly, Robb Report, 8 May 2026

The mist includes plum beauty juice, plum beauty oil, hyaluronic acid and natural moisturizing factors. —James Manso, Footwear News, 6 May 2026

Word History

Etymology

International Scientific Vocabulary

First Known Use

1934, in the meaning defined above

Rhymes for hyaluronic acid

• antacid
• placid

Medical Definition

hyaluronic acid

noun

hy·​al·​uron·​ic acid ˌhīl-yu̇-ˌrän-ik-  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