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

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

For a go-to glass stovetop cleanser, Shpeen recommends looking for gentle surfactants derived from plants like coconuts, pH-balanced formulas, and mild degreasers that rinse clean. — Jamie Cuccinelli, Martha Stewart, 16 Sep. 2026

Often found as sodium lauryl sulfate or sodium laureth sulfate on product ingredient lists, the foaming surfactants are used in many shampoos to give your hair and scalp a very thorough cleanse. — Audrey Noble, Vogue, 27 Aug. 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