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

Formulated with 96% natural-origin ingredients, this features a blend of niacinamide, caffeine, squalane, peptides, hyaluronic acid, and SPF 25 to reveal hydrated, supple skin. —Kiana Murden, Vogue, 9 June 2025

The Allure-editor favorite is formulated with conditioning ingredients like niacin (vitamin B3) and hyaluronic acid. —Angela Trakoshis, Allure, 4 June 2025

The treatment involves microneedling the skin on a person’s face with the salmon sperm (which can be injected with hyaluronic acid according to Dr. Gabriel Chiu who spoke with Variety in September 2024 about the trend). —Catherine Santino, People.com, 3 June 2025

Ideal for the warmer months, this gel-like formula replenishes dry and dull skin with peptides, hyaluronic acid, and a special plum and ice willow herb complex. —Denise Primbet, Glamour, 28 May 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