squalene

noun

squa·​lene ˈskwā-ˌlēn 

: an acyclic hydrocarbon C₃₀H₅₀ that is widely distributed in nature (such as a major component of sebum and in shark-liver oils) and is a precursor of sterols (such as cholesterol)

Examples of squalene in a Sentence

Recent Examples on the Web

However, the team was surprised to see that a fatty metabolite called squalene was missing. —Laura Baisas, Popular Science, 29 Jan. 2025

Prequel’s Multi Acid Milk Peel AHA Exfoliating Solution combines several different acids (including glycolic and phytic) and squalene to renew the skin, while keeping it soft and comfortable. —Katie Chang, Forbes.com, 30 Mar. 2025

Hemp seed oil and squalene are also potent agents for soothing and protecting skin. —Bianca Salonga, Forbes, 18 Feb. 2025

The formula also includes red algae, squalene, niacinamide and an Ayurvedic fermentation complex to tackle dark spots and hyperpigmentation, calm and hydrate. —Celia Shatzman, Forbes, 26 Feb. 2025

Word History

Etymology

International Scientific Vocabulary, from Latin squalus, a sea fish — more at whale

First Known Use

1916, in the meaning defined above

Medical Definition

squalene

noun

squa·​lene ˈskwā-ˌlēn 

: an acyclic hydrocarbon C₃₀H₅₀ that is widely distributed in nature (as a major component of sebum and in shark-liver oils) and is a precursor of sterols (as cholesterol)