permanent magnet

noun

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

permanent magnet

noun

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

permanent magnet

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

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Other Word Forms

permanent magnetism noun

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Word History and Origins

Origin of permanent magnet¹

First recorded in 1820–30

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Example Sentences

Examples have not been reviewed.

The permanent magnets are the most expensive part of the technology, Mr Sirman reports.

From

Heavy rare earths are used in many military fields such as missiles, radar, and permanent magnets.

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And, at present, China massively dominates global permanent magnet production, with more than 90% market share, external.

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They are workhorses of applications such as lasers, permanent magnets in wind turbines and electric vehicles, X-ray screens and even cancer-fighting medicines.

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Afterward, the researchers collected the robots with a permanent magnet and used ultrasound to detach the bacteria clinging to them.

From

permanent health insurance permanent mold

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