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 formula consists of jojoba seed oil, cocoa extract, white tea extract, and hyaluronic acid, so the drops also double as hydrating skincare. —Izzy Baskette, People.com, 16 May 2025

The mask already contained top-tier ingredients like niacinamide, glycerin, and hyaluronic acid. —Sophia Panych, Allure, 15 May 2025

Besides having aesthetically pleasing packaging and being a treat for the nose, the cream also boasts a hydrating ingredient makeup of vitamin E, aloe, shea butter, cocoa butter, and hyaluronic acid. —Stacia Datskovska, Footwear News, 13 May 2025

The Hydrogel Face Mask Photo : Augustinus Bader Copper peptides and low-molecular hyaluronic acid seep into the skin to boost firmness and hydration, while a dose of allantoin soothes on contact. —Justin Fenner, Robb Report, 12 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