surface-active

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.

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surface-active adj altering the properties and esp. lowering the tension at the surface of contact between phases <soaps and wetting agents are typical \surface-active substances>

Medical dictionary. 2011.

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  • 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 — 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

  • 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

  • surface active requise — naudingojo ploto poreikis statusas T sritis radioelektronika atitikmenys: angl. real estate requirement vok. Flächenbedarf, m rus. потребность полезной площади, f pranc. surface active requise, f …   Radioelektronikos terminų žodynas

  • surface-active substance — paviršinio aktyvumo medžiaga statusas T sritis chemija apibrėžtis Medžiaga, kuri adsorbuojasi fazių sąlytyje ir sumažina paviršiaus įtemptį. santrumpa( os) PAM atitikmenys: angl. surface active substance; surfactant rus. поверхностно активное… …   Chemijos terminų aiškinamasis žodynas

  • surface-active substance — aktyvioji paviršiaus medžiaga statusas T sritis fizika atitikmenys: angl. surface active substance; surfactant vok. grenzflächenaktiver Stoff, m; oberflächenaktiver Stoff, m; Tensid, n rus. поверхностно активное вещество, n pranc. agent tensio… …   Fizikos terminų žodynas

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

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