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

Ingredient highlights include caffeine, glycerin, squalane, sunflower seed oil, and hyaluronic acid—plus collagen-boosting peptides and redness-reducing panthenol (a form of vitamin B5). —Jennifer Hussein, Allure, 30 Jan. 2025

Looking for the moisturizing benefits of hyaluronic acid? —Ariana Yaptangco, Glamour, 23 Jan. 2025

These ingredients include hyaluronic acid, niacinamide, azelaic acid, and antioxidants. —Anna Giorgi, Verywell Health, 22 Jan. 2025

The gel-like elixir features peptides, vegan keratin, vitamin B5, and hyaluronic acid to condition each hair while promoting enhanced growth, strength, and length. —Kiana Murden, Vogue, 21 Jan. 2025

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