surfactant

noun

sur·​fac·​tant (ˌ)sər-ˈfak-tənt 

ˈsər-ˌfak-

: a surface-active substance (such as a detergent)

surfactant adjective

Examples of surfactant in a Sentence

Recent Examples on the Web

Know your skin type and which ingredients work for it, choose natural, vegan and cruelty-free products worth investing in, and watch for fillers like artificial colors and PEG surfactants if your skin is sensitive. — Hanna Wickes, Charlotte Observer, 6 Nov. 2026

These tiny grease-cutters are packed with enzymes and surfactants that cut through stubborn stovetop grime. — Madeline Buiano, Martha Stewart, 29 Oct. 2026

Strong surfactants Since hydration should be one of the number one skin-care goal for psoriasis patients, using intense cleansers could lead to trouble. — Kara McGrath, Allure, 22 Oct. 2026

Laundry detergent is a solution of surfactants, enzymes, and cleaning agents, all of which provide its cleaning power. — Kamron Sanders, Better Homes & Gardens, 13 Oct. 2026

Word History

Etymology

surface-active + -ant

First Known Use

1950, in the meaning defined above

Phrases Containing surfactant

• co-surfactant

Rhymes for surfactant

• attractant
• extractant
• reactant

Medical Definition

surfactant

noun

sur·​fac·​tant (ˌ)sər-ˈfak-tənt, ˈsər-ˌ 

: a surface-active substance

specifically : a surface-active lipoprotein mixture which coats the alveoli and which prevents collapse of the lungs by reducing the surface tension of pulmonary fluids

surfactant adjective