impedance

a) A measure of the opposition to the flow of an alternating current in a circuit; the aggregation of its resistance, inductive and capacitive reactance. Represented by the symbol Z.

Some argue that having impedance mismatch is difficult for programming intensive applications.

b) a measure of opposition to motion of something subjected to a force.

But the impedance mismatch between SQL and Java was no better than between SQL and other languages.

See Also: impediment

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Look at other dictionaries:

  • impédance — [ ɛ̃pedɑ̃s ] n. f. • 1892; angl. impedance (1886); du lat. impedire « empêcher » ♦ Électron. Rapport (exprimé en ohms) entre les valeurs efficaces de la tension aux bornes d un circuit et de l intensité du courant sinusoïdal qui le traverse. L… …   Encyclopédie Universelle

  • Impedance — is a concept associated with the transmission of waves and electrical signals. There are many kinds of waves, and impedance is different in each of them, hence this disambiguation page. However, impedance is also a unifying concept. It is related …   Wikipedia

  • Impedance — Impédance Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Le terme Impédance est utilisé dans plusieurs domaines: Celui de l électricité et de l électronique, voir l article Impédance (électricité)… …   Wikipédia en Français

  • Impedance — Im*ped ance, n. [Impede + ance.] (Elec.) The apparent resistance in an electric circuit to the flow of an alternating current, analogous to the actual electrical resistance to a direct current, being the ratio of electromotive force to the… …   The Collaborative International Dictionary of English

  • impedance — index deterrent, offset Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • impedance — (n.) 1886, from IMPEDE (Cf. impede) + ANCE (Cf. ance) …   Etymology dictionary

  • impedance — ► NOUN ▪ the effective resistance to an alternating electric current arising from the combined effects of ohmic resistance and reactance …   English terms dictionary

  • impedance — [im pēd′ ns] n. [< IMPED(E) + ANCE] 1. the total opposition offered by an electric circuit to the flow of an alternating current of a single frequency: it is a combination of resistance and reactance and is measured in ohms: the reciprocal of… …   English World dictionary

  • Impédance — Cette page d’homonymie répertorie les différents sujets et articles partageant un même nom. Le terme Impédance est utilisé dans plusieurs domaines: Celui de l électricité et de l électronique, voir l article Impédance (électricité) Impédance… …   Wikipédia en Français

  • impedance — kompleksinės varžos modulis statusas T sritis Standartizacija ir metrologija apibrėžtis Apibrėžtį žr. priede. priedas( ai) Grafinis formatas atitikmenys: angl. impedance; modulus of impedance vok. Betrag der Impedanz, m; impedanz Modul, m rus.… …   Penkiakalbis aiškinamasis metrologijos terminų žodynas

  • impedance — pilnutinės varžos modulis statusas T sritis fizika atitikmenys: angl. impedance; modulus of impedance vok. Betrag der Impedanz, m; Impedanz Modul, m rus. модуль полного сопротивления, m pranc. impédance, f; module de l’impédance, m …   Fizikos terminų žodynas

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