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diffusion (noun)

См. также в других словарях:

  • diffusion — ► NOUN 1) the action or process of becoming spread over a wide area. 2) Physics the intermingling of substances by the natural movement of their particles. DERIVATIVES diffusive adjective …   English terms dictionary

  • diffusion pump — noun vacuum pump used to obtain a high vacuum • Syn: ↑condensation pump • Hypernyms: ↑air pump, ↑vacuum pump * * * noun : a vacuum pump for producing extremely high vacuums by diffusing gas into a jet of vapor of mercury or some heavy oil by… …   Useful english dictionary

  • diffusion — UK US /dɪˈfjuːʒən/ noun [U] ► MARKETING, COMMUNICATIONS the process by which information, ideas, changes in behaviour, etc. spread through a group of people: »The research looks at factors influencing the diffusion of innovative products in… …   Financial and business terms

  • diffusion index — UK US noun [C] ► ECONOMICS the degree to which different economic indicators (= measurements of economic activity) are changing in the same way at a particular time: »March s diffusion index suggested Japan s recovery was losing steam. ► FINANCE …   Financial and business terms

  • diffusion plant — noun (nuclear eng) A plant used for isotope separation by gaseous or thermal diffusion • • • Main Entry: ↑diffuse …   Useful english dictionary

  • diffusion tube — noun An instrument for determining the rate of diffusion for different gases • • • Main Entry: ↑diffuse …   Useful english dictionary

  • diffusion — late 14c., from L. diffusionem (nom. diffusio) a pouring forth, noun of action from pp. stem of diffundere scatter, pour out, from dis apart, in every direction (see DIS (Cf. dis )) + fundere pour (see FOUND (Cf. found) (2)) …   Etymology dictionary

  • diffusion — noun the diffusion of Marxist ideas Syn: spread, dissemination, scattering, dispersal, diaspora, distribution, circulation, propagation, transmission, broadcasting, promulgation …   Thesaurus of popular words

  • diffusion coefficient — noun or diffusion constant : the quantity of a substance that in diffusing from one region to another passes through each unit of cross section per unit of time when the volume concentration gradient is unity called also diffusivity …   Useful english dictionary

  • diffusion-transfer process — noun : any of several document copying photographic processes in which a facsimile of the original document is produced by development of a photographic image, by transfer by diffusion of the silver salts in the undeveloped areas to a receiving… …   Useful english dictionary

  • diffusion constant — noun see diffusion coefficient …   Useful english dictionary

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