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ca·pac·i·tor kə-'pas-ət-ər n a device giving capacitance and usu. consisting of conducting plates or foils separated by thin layers of dielectric (as air or mica) with the plates on opposite sides of the dielectric layers oppositely charged by a source of voltage and the electrical energy of the charged system stored in the polarized dielectric
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ca·pac·i·tor (kə-pasґĭ-tər) a device for holding and storing charges of electricity.Medical dictionary. 2011.