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de-energize

American  
[dee-en-er-jahyz] / diˈɛn ərˌdʒaɪz /
especially British, de-energise

verb (used with object)

de-energized, de-energizing
  1. to deprive of electrical energy or exhaust the electrical energy from.

    Turning off the ignition de-energizes the spark plugs.


de-energize British  
/ diːˈɛnəˌdʒaɪz /

verb

  1. (tr) electrical engineering to disconnect (an electrical circuit) from its source

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of de-energize

First recorded in 1885–90; de- + energize ( def. )


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

For instance, multiple lawsuits allege Edison’s equipment ignited the deadly Eaton fire after the utility failed to de-energize overhead wires during a Jan. 7 wind event.

From Los Angeles Times ● Jan. 25, 2025

Afterwards, the local Salt River Project power utility was called to de-energize the pole.

From Washington Times ● Dec. 7, 2023

The project required Metro to coordinate with Pepco, which will de-energize power transmission lines 15 feet above the station canopies.

From Washington Post ● Jan. 28, 2023

Multiple families have filed a lawsuit against Southern California Edison, alleging the utility failed to properly de-energize its electrical lines and caused the deadly Fairview fire in Hemet, which destroyed dozens of structures.

From Los Angeles Times ● Sep. 23, 2022

The passive and contemplative following of thought, my own or other people's, must not de-energize my sympathies and my will.

From Julia Ward Howe 1819-1910 by Maud Howe Elliott

Tens of thousands of customers in Los Angeles county alone were without power, as authorities de-energized power lines in a bid to lessen the possibility of electrical sparks that the heavy wind gusts could carry.

From Barron's ● Oct. 17, 2026

At staging areas, the batteries are de-energized, disassembled, recycled and disposed of safely, she said.

From Los Angeles Times ● Feb. 5, 2025

Additionally, the company said its distribution lines to the west of Eaton Canyon "were de-energized well before the reported start time of the fire" as part of its fire safety shutoff program.

From BBC ● Jan. 16, 2025

At that moment, Trump took a long-defeated sigh, and looked up at the ceiling blankly, looking confused and de-energized.

From Salon ● Mar. 14, 2024

Both supervisory lamps remain out as long as the two subscribers are conversing, but when either one of them hangs up his receiver the corresponding supervisory relay becomes de-energized and the corresponding lamp lights.

From Cyclopedia of Telephony and Telegraphy, Vol. 2 A General Reference Work on Telephony, etc. etc. by Samuel McMeen

By de-energizing powerlines, utility providers seek to lesson the chances that a electrical spark could be whipped by winds into to a devastating blaze.

From Los Angeles Times ● Oct. 14, 2026

“We can look after the fact and see that the consequences of potentially not de-energizing the transmission lines are enormous,” he said.

From Los Angeles Times ● Feb. 13, 2025

The CEO of Southern California Edison told The Times earlier this month that winds were not strong enough to merit de-energizing a powerful electrical transmission line.

From Los Angeles Times ● Jan. 26, 2025

Powell said Edison was monitoring the weather closely Jan. 7 but said the winds did not meet the threshold the company uses for de-energizing transmission lines.

From Los Angeles Times ● Jan. 15, 2025

Where the study of metaphysics becomes de-energizing, it becomes demoralizing.

From Julia Ward Howe 1819-1910 by Maud Howe Elliott

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