direct current

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di·rect cur·rent (abbr.: DC) • n. an electric current flowing in one direction only. Compare with alternating current.

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direct current A unidirectional current provided by a source of electrical energy. It is used in induced polarization surveys and in some electrical resistivity surveys, although very-low-frequency alternating current sources are being used increasingly to overcome problems of electrode and ground polarization.

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direct current, abbr. DC, a movement of electric charge across an arbitrarily defined surface in one direction only. See electricity; generator.

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direct current (DC) See electric current