surface-active

adjective

sur·​face-active ˈsər-fəs-ˌak-tiv How to pronounce surface-active (audio)
: altering the properties and especially lowering the tension at the surface of contact between phases
soaps and wetting agents are typical surface-active substances

Word History

First Known Use

1920, in the meaning defined above

Time Traveler
The first known use of surface-active was in 1920

Dictionary Entries Near surface-active

Cite this Entry

“Surface-active.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/surface-active. Accessed 29 Mar. 2024.

Medical Definition

surface-active

adjective
: altering the properties and especially lowering the tension at the surface of contact between phases
soaps and wetting agents are typical surface-active substances
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