permanent magnet

noun

|Updated on: 22 May 2018

Definition of permanent magnet

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

Recent Examples of permanent magnet from the Web

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
In newer motors the usual order of things is reversed, with the windings held in the stator and the rotor sporting permanent magnets.

— 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.