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

Get this popular hair wax stick to keep those flyaway strands slicked back when the humidity is high and a $2 semi-matte lipstick made with hyaluronic acid to nourish the lips. —Shalwah Evans, People.com, 25 May 2025

The hydrating formula is enriched with hyaluronic acid. —Jenny Berg, Vogue, 23 May 2025

Estrogen plays a role in collagen and elastin production (proteins responsible for strength and resilience), hyaluronic acid, a major skin hydrator, and sebum, an oil that lubricates the skin barrier and keeps skin from drying out, says Yadav. —Mara Santilli, Flow Space, 22 May 2025

The set contains a watermelon toner and strawberry primer with beta hydroxy acid and a lip balm with hyaluronic acid, all ingredients dermatologists say tweens should avoid. —Julia Ingram, CBS News, 22 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