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 infused with hyaluronic acid, collagen, and retinol, all combined into a lightweight serum that will increase the firmness and elasticity of your skin. —Mia Meltzer, Rolling Stone, 31 Oct. 2024

The brand’s latest product adds an essential step to any advanced regimen—a skin-balancing toner flush with antioxidants, anti-inflammatory ingredients, and moisturizing hyaluronic acid. —Adam Hurly, Robb Report, 29 Oct. 2024

What makes Athena Club’s version different, however, is the addition of skin-care ingredients like hyaluronic acid, niacinamide, and peptides that penetrate the skin, thanks to the microdart design that delivers the actives directly when applied. —Karina Hoshikawa, refinery29.com, 28 Oct. 2024

And what’s left is permanent, unlike hyaluronic acid filler. —Taryn Brooke, Allure, 24 Oct. 2024

Word History

Etymology

International Scientific Vocabulary

First Known Use

1934, in the meaning defined above

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