surfactant

noun

sur·​fac·​tant (ˌ)sər-ˈfak-tənt How to pronounce surfactant (audio)
ˈsər-ˌfak-
: a surface-active substance (such as a detergent)
surfactant adjective

Examples of surfactant in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Spending more time gently massaging your cleanser can help surfactants—compounds that enable water to mix with oil and dirt—do their job more effectively. Cathy Cassata, Health, 25 Feb. 2025 However, the negative byproduct of the surfactants is that the resulting inks have a low concentration of 2D crystals and a high amount of residual surfactant, which is difficult to remove and degrades the electrical performance of the material. IEEE Spectrum, 2 Feb. 2017 This mixture is introduced into a series of vessels, or cells, in which the surfactants cause the rare earth–bearing grains to bind selectively to bubbles floating to the top of the cells. IEEE Spectrum, 27 Dec. 2024 Fortunately, this Avene cleansing foam takes care of it all for you, providing a thorough cleanse with Avene thermal spring water, non-sulfated surfactants, glycerin, and diglycerin. Kiana Murden, Vogue, 7 Feb. 2025 See All Example Sentences for surfactant

Word History

Etymology

surface-active + -ant

First Known Use

1950, in the meaning defined above

Time Traveler
The first known use of surfactant was in 1950

Browse Nearby Words

Cite this Entry

“Surfactant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/surfactant. Accessed 12 Mar. 2025.

Medical Definition

surfactant

noun
sur·​fac·​tant (ˌ)sər-ˈfak-tənt, ˈsər-ˌ How to pronounce surfactant (audio)
: 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

More from Merriam-Webster on surfactant

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