viscosity index
noun Date: 1929 an arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature with higher numbers indicating viscosities that change little with temperature

New Collegiate Dictionary. 2001.

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  • Viscosity index — is a petroleum industry term. It is a lubricating oil quality indicator, an arbitrary measure for the change of kinematic viscosity with temperature. The viscosity of liquids decreases as temperature increases. The viscosity of a lubricant is… …   Wikipedia

  • viscosity index — klampos indeksas statusas T sritis Standartizacija ir metrologija apibrėžtis Sutartinės skalės skaičius, apibrėžiantis alyvos klampos kitimą kintant temperatūrai. atitikmenys: angl. viscosity index vok. Viskositätsindex, m rus. индекс вязкости, m …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • viscosity index — klampos indeksas statusas T sritis chemija apibrėžtis Sutartinės skalės vienetas; rodo skysčio (ppr. naftos ar jos perdirbimo produktų) priklausomybę nuo temperatūros. atitikmenys: angl. viscosity index rus. индекс вязкости …   Chemijos terminų aiškinamasis žodynas

  • viscosity index — noun : an arbitrary number assigned as a measure of the constancy of the viscosity of a lubricating oil with change of temperature such that a high index indicates that the viscosity changes little with temperature * * * Auto., Mach. an arbitrary …   Useful english dictionary

  • viscosity index — [1] (VI) A measure of how the viscosity of a liquid (especially oil) changes with temperature: the higher the VI, the smaller the change of viscosity with temperature [2] A measure of an oil s ability to resist changes in viscosity when heated …   Dictionary of automotive terms

  • viscosity index — Auto., Mach. an arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature. [1935 40] * * * …   Universalium

  • viscosity index — viscos′ity in dex n. mac aum an arbitrary scale for lubricating oils that indicates the extent of variation in viscosity with variation of temperature …   From formal English to slang

  • Viscosity index — Коэффициент вязкости …   Краткий толковый словарь по полиграфии

  • viscosity index improver — An oil additive which reduces thinning at high temperature, thus improving the VI …   Dictionary of automotive terms

  • viscosity — index adhesion (affixing) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

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