permanent magnet

noun

1. a magnet that retains its magnetism after being removed from an external magnetic field.

permanent magnet

noun

1. a magnet, often of steel, that retains its magnetization after the magnetic field producing it has been removed

permanent magnet

/ pûr′mə-nənt /

1. A piece of ferromagnetic material that retains its magnetism after it has been magnetized.

Derived Forms

• permanent magnetism, noun

Other Words From

• permanent magnetism noun

Word History and Origins

Origin of permanent magnet¹

First recorded in 1820–30

Example Sentences

For these new models and all EVs henceforth, BMW is steering clear of permanent magnets and the rare-earth metals contained therein.

From Popular-Science

Demand for these minerals—rare earths for catalysts and powerful permanent magnets, lithium for batteries, and aluminum for packaging, among others—is expected to keep growing quickly.

From Quartz

One high-stakes arena that could shape the trajectory of the global climate economy is the rare earth permanent magnet industry.

From Quartz

The amount the armature B is rotated will depend upon the relative effects of the pole of the solenoid and the permanent magnet G.

From Project Gutenberg

The ordinary, permanent magnet, natural or artificial, has little place in the arts.

From Project Gutenberg

Any material that will retain its magnetic influence after removal from the source of magnetism is known as a permanent magnet.

From Project Gutenberg

When this current flows in one direction, its magnetic field assists the field of the permanent magnet, strengthening it.

From Project Gutenberg

This enabled him to employ a very powerful permanent magnet in place of the minute one made of watch-spring.

From Project Gutenberg