capacitor

noun

ca·​pac·​i·​tor kə-ˈpa-sə-tər How to pronounce capacitor (audio)
: a device that is used to store electrical energy

Examples of capacitor in a Sentence

Recent Examples on the Web
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The easiest one involves a DeLorean, a flux capacitor, and setting the time circuits for January 2036, when Josh Allen’s about to turn 40. Sean Keeler, The Denver Post, 10 Jan. 2025 The simplest resonator to implement, and the one the team is tackling first, is an inductive-capacitive (LC) resonator, where the role of the capacitor is played by the whole circuit and an on-chip inductor serves to keep the voltage oscillating. IEEE Spectrum, 2 Jan. 2025 Then the boards and various components, such as microchips and aluminum capacitors, are shuffled onto a large, pink sorting machine. Eshe Nelson, New York Times, 1 Jan. 2025 At present, operators must do that voltage regulation constantly because of the variable nature of the sun’s energy—and that task wears down inverters, capacitors, and other components. IEEE Spectrum, 11 Dec. 2024 See all Example Sentences for capacitor 

Word History

First Known Use

1925, in the meaning defined above

Time Traveler
The first known use of capacitor was in 1925

Dictionary Entries Near capacitor

Cite this Entry

“Capacitor.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/capacitor. Accessed 20 Jan. 2025.

Kids Definition

capacitor

noun
ca·​pac·​i·​tor kə-ˈpas-ət-ər How to pronounce capacitor (audio)
: a device for storing electric charge

called also condenser

Medical Definition

capacitor

noun
ca·​pac·​i·​tor kə-ˈpas-ət-ər How to pronounce capacitor (audio)
: 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

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