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

Through a blend of camellia alba, blue ginger, hyaluronic acid, and vitamins C and E, this antioxidant-rich mist delivers not only a refreshingly cool sensation, but ensures your skin is protected against antioxidants and quenched. — Kiana Murden, Vogue, 21 Aug. 2026

Sunflower and jojoba seed oils do much of the makeup-melting work while replenishing skin with emollient moisture, and a supporting cast of ceramides, panthenol, hyaluronic acid, cica, and fig helps hydrate, soothe, and support the moisture barrier. — Christa Joanna Lee, Allure, 20 Aug. 2026

This moisturizer has hyaluronic acid to hydrate skin, retinol to minimize wrinkles, and vitamin C for a radiant glow. — Sian Babish, PEOPLE, 20 Aug. 2026

Like the lotion, this formula features hyaluronic acid, ceramides, and glycerin, plus shea butter for an extra conditioning boost. — Jessie Quinn, StyleCaster, 19 Aug. 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