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

Especially good for sensitive skin types, this wash is formulated with eucalyptus and amino acids to purify and hydrate, while surfactants erase the day's grime. —Deanna Pai, Allure, 13 Dec. 2024

Those surfactants work by trapping dirt and removing it from the surface of the item. —Melissa Locker, Southern Living, 3 Nov. 2024

Your typical can of BKF contains oxalic acid, and a few other abrasives and surfactants that soften grease and remove calcium, lime and other alkaline build-up. —Emily Farris, Bon Appétit, 3 Dec. 2024

For example: Clarifying shampoos contain heavy-duty surfactants to deep-clean. —Heather Jones, Verywell Health, 1 Dec. 2024

Word History

Etymology

surface-active + -ant

First Known Use

1950, in the meaning defined above

Phrases Containing surfactant

• co-surfactant

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