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

By working with other substances, such as elastin and hyaluronic acid, collagen helps maintain skin elasticity, volume, and moisture. —Heather Jones, Verywell Health, 19 Mar. 2025

The blush is also infused with ingredients that nurture mature skin, including hyaluronic acid and rose flower water for hydration and hibiscus flower water for gentle exfoliation. —Jenny Berg, Vogue, 18 Mar. 2025

As for the ingredients, the 100% cruelty-free formula is enriched with high-grade skincare components, including vitamin E and hyaluronic acid, both of which will keep your skin nice and hydrated throughout the day (and as a dry skinned gal, this is music to my ears). —Denise Primbet, Glamour, 16 Mar. 2025

Though byproducts like collagen, hyaluronic acid, and keratin evolved with modern skin care, tallow was (mostly) left behind. —Boutayna Chokrane, WIRED, 14 Mar. 2025

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