: a device that is used to store electrical energy
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During this process, the team added things like transistors, resistors, and capacitors.—Christopher McFadden, Interesting Engineering, 24 Jan. 2026 Independent digital and analog power supplies, along with ELNA capacitors, deliver clarity, dynamics and tonal accuracy.—Mark Sparrow, Forbes.com, 23 Jan. 2026 Sometimes motors are failing, capacitors are going weak.—Sergio Candido, CBS News, 22 Jan. 2026 The soundtrack was playing, some friends dressed in 50s attire and one person came as the flux capacitor.—Kansas City Star, 1 Nov. 2025 See All Example Sentences for capacitor
: a device giving capacitance and usually 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