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

The Anua moisturizer combines the powers of PDRN, which promotes cell regeneration, 10 different molecular weights of hyaluronic acid, which deeply hydrate the skin, and hydrolyzed collagen, which helps to smooth and firm. — Emma Greene, InStyle, 28 June 2026

The pros recommend primers with gripping technology and hydrating ingredients, like glycerin, plant oils, shea butter, and hyaluronic acid. — Alanna Martine Kilkeary, Glamour, 27 June 2026

Its prebiotics give skin a glowing, youthful-looking complexion, while hyaluronic acid and watermelon extract deliver a burst of hydration to revive dry, dull skin. — Melony Forcier, PEOPLE, 27 June 2026

It’s designed to moisturize for up to 100 hours after application with a creamy, gel-like texture infused with hyaluronic acid and aloe bioferment. — Caley Sturgill, Southern Living, 26 June 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