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

In other words, hyaluronic acid and glycerin help bring moisture to the skin, while the butters help keep skin feeling soft and moisturized. — Katie Decker-Jacoby, StyleCaster, 28 Sep. 2026

The formula draws on a low-molecular weight collagen peptide, galactomyces ferment filtrate, niacinamide, and hyaluronic acid to keep skin soft, supple, bouncy, and glowing. — Kiana Murden, Vogue, 25 Sep. 2026

This anti-aging cream delivers protein peptides to the skin to boost collagen, along with other tried-and-true ingredients, like hyaluronic acid, vitamin B5, and organic green tea leaf extract, for hydration and brightening. — Mariana Best, PEOPLE, 24 Sep. 2026

Look for products with a mix of humectants, like hyaluronic acid and glycerin; emollients like ceramides and squalane; and occlusives like petroleum jelly. — Lindy Segal, Glamour, 22 Sep. 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