permanent magnet

noun

Definition of permanent magnet

: a magnet that retains its magnetism after removal of the magnetizing force

Examples of permanent magnet in a Sentence

Recent Examples on the Web

China also aims to use the minerals to produce its own versions of permanent magnets and electric vehicles. Los Angeles Times, "The hidden costs of China’s rare-earth trade," 29 July 2019 Toyota is an example of this, recently announcing a permanent magnet motor that uses less neodymium than previously. Megan Geuss, Ars Technica, "Tariffs on Chinese rare-earth minerals create a sticky problem for US competitors," 30 Nov. 2018 Tesla has avoided relying too much on permanent magnets in its motors, despite the industry trend in favor of the lightweight, powerful component. Megan Geuss, Ars Technica, "Elon Musk tweet-announces a $78,000 performance Model 3 with all-wheel drive," 20 May 2018 Billionaire backing and the employment of passive magnetic levitation, which uses unpowered loops of wire on the track and permanent magnets in the pods to create levitation, helps address these issues. Aditi Shrikant, Vox, "A quick guide to hyperloops, Richard Branson’s latest boondoggle," 12 Oct. 2018 On either side of the battery pack is a synchronous permanent magnet electric motor. Jonathan M. Gitlin, Ars Technica, "Forget about that Tesla—the Jaguar I-Pace is the most compelling EV yet," 14 June 2018 Magnetic fields can be produced by permanent magnets or by electric currents passing through bundles of wires wrapped around an iron core. The Economist, "Do electric cars dream of software fixes?," 22 Apr. 2018 On the road, the combination of internal combustion, permanent magnets, and six-speed dual clutch gearbox work well. Jonathan M. Gitlin, Ars Technica, "The $26,000 hybrid that could do it all? The Kia Niro," 6 Feb. 2018 That turns them into an electromagnet, generating a magnetic field which pushes against an existing field generated by a second set of permanent magnets inside the stator. The Economist, "Let’s twist againAs electric motors improve, more things are being electrified," 14 Sep. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'permanent magnet.' 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 permanent magnet

1882, in the meaning defined above

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Last Updated

14 Aug 2019

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The first known use of permanent magnet was in 1882

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