ca·​pac·​i·​tor | \ kə-ˈpa-sə-tər How to pronounce capacitor (audio) \

Definition of capacitor

: a device that is used to store electrical energy

Examples of capacitor in a Sentence

Recent Examples on the Web Interestingly, Dell has also built a charging cubby into the keyboard specifically for its Detachable Active Pen, which charges almost instantaneously—in thirty seconds!—while docked inside the cubby, using capacitor technology. Mark Hachman, PCWorld, "Dell's new Latitude 7320 Detachable will take on the Surface Pro 7+," 27 Apr. 2021 One particularly unglamorous widget, a type of ceramic capacitor that ordinarily sells for around 3 cents each, became hard to find when a Covid-19 outbreak temporarily closed a factory in China. New York Times, "‘It’s a Roller-Coaster Ride’: Global Chip Shortage Is Making Industries Sweat," 15 Apr. 2021 The capacitor shortage hurt production of a popular cellular modem. New York Times, "‘It’s a Roller-Coaster Ride’: Global Chip Shortage Is Making Industries Sweat," 15 Apr. 2021 Wonder if Burch also entertains at kids’ birthday parties with his flux capacitor., "Baseball surprisingly acted quickly in pulling All-Star Game out of Atlanta, and other thoughts," 12 Feb. 2020 Vintage Macs usually require a full teardown and capacitor replacement before they can be safely powered up. Chris Wilkinson, Ars Technica, "Working from home at 25MHz: You could do worse than a Quadra 700 (even in 2020)," 11 Dec. 2020 To replace the dual-run capacitor for a Carrier central air conditioner, prices ranged from $135 to $459. Kevin Brasler, Star Tribune, "It pays to do homework on HVAC maintenance in your Twin Cities home," 31 Oct. 2020 The system also exhibited noticeable capacitor whine. Jim Salter, Ars Technica, "Hands-on with Intel’s i7-1185G7 Tiger Lake prototype laptop," 17 Sep. 2020 But if the plates of a capacitor touch, the magic is gone. Sara Harrison, Wired, "When Doctors and Patients Talk About Death Over Zoom," 15 June 2020

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'capacitor.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of capacitor

1925, in the meaning defined above

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Time Traveler for capacitor

Time Traveler

The first known use of capacitor was in 1925

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Statistics for capacitor

Last Updated

2 May 2021

Cite this Entry

“Capacitor.” Dictionary, Merriam-Webster, Accessed 15 May. 2021.

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More Definitions for capacitor



English Language Learners Definition of capacitor

technical : a device that is used to store electrical energy


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

Medical Definition of 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

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