surface-active
adjective Date: 1920 altering the properties and especially lowering the tension at the surface of contact between phases <
soaps and wetting agents are typical surface-active substances
>

New Collegiate Dictionary. 2001.

Look at other dictionaries:

  • surface-active — [sʉr′fisak΄tiv] adj. Chem. designating or of a substance, as a detergent or wetting agent, that lowers the surface tension of the solvent in which it is dissolved or the tension at the interface between two immiscible liquids * * * sur·face… …   Universalium

  • surface-active — [sʉr′fisak΄tiv] adj. Chem. designating or of a substance, as a detergent or wetting agent, that lowers the surface tension of the solvent in which it is dissolved or the tension at the interface between two immiscible liquids …   English World dictionary

  • surface-active — Indicating the property of certain agents of altering the physicochemical nature of surfaces and interfaces, bringing about lowering of interfacial tension; they usually possess both lipophilic and hydrophilic groups. SEE ALSO: surfactant. * * *… …   Medical dictionary

  • surface-active — adjective capable of lowering the surface tension of a liquid; used especially of detergents • Similar to: ↑active …   Useful english dictionary

  • surface-active — adjective capable of lowering the surface tension of a liquid …   Wiktionary

  • surface-active — adjective (of a substance) tending to reduce the surface tension of a liquid in which it is dissolved …   English new terms dictionary

  • surface-active — sur′face ac tive adj. chem. of or pertaining to a substance that, when dissolved in water, reduces surface tension • Etymology: 1915–20 …   From formal English to slang

  • surface-active agent — /serr fis ak tiv/, Chem. any substance that when dissolved in water or an aqueous solution reduces its surface tension or the interfacial tension between it and another liquid. Also called surfactant. * * * ▪ chemistry also called  Surfactant,  … …   Universalium

  • surface-active agent — noun a chemical agent capable of reducing the surface tension of a liquid in which it is dissolved (Freq. 6) • Syn: ↑wetting agent, ↑wetter, ↑surfactant • Hypernyms: ↑chemical agent • Hyponyms: ↑ …   Useful english dictionary

  • surface-active substance — aktyvioji paviršiaus medžiaga statusas T sritis Standartizacija ir metrologija apibrėžtis Medžiaga, kuri įterpta į skysčio ar kietojo kūno paviršių sumažina to paviršiaus įtemptį. atitikmenys: angl. surface active substance; surfactant vok.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”