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

Skin-loving ingredients like hyaluronic acid, glycerin, and botanical extracts are often to thank, and a wide range of recipes caters to all sorts of faces. —Annie Blackman, Allure, 18 Jan. 2025

It’s also loaded with moisturizing ingredients, like hyaluronic acid, ceramides, and vitamin E, to make sure your lips stay plump and protected. —Jessica Kasparian, SELF, 14 Jan. 2025

Look for ingredients like hyaluronic acid, glycerin, and ceramides. —Amanda Svachula, Health, 13 Jan. 2025

These benefits arrive via sugar and hyaluronic acid filling spears, which boost moisture and help lips look plumper, plus sea fennel to smooth fine lines on the lips. —Kiana Murden, Vogue, 25 Dec. 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