permanent magnet

American  

noun

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

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permanent magnet British  

noun

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

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permanent magnet Scientific  

/ pûr′mə-nənt /

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

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Other Word Forms

• permanent magnetism noun

Etymology

Origin of permanent magnet

First recorded in 1820–30

Example Sentences

Despite the large number of known magnetic compounds, no entirely new permanent magnet has been identified from this pool.

From Science Daily

These four "magnetic" rare earths are mainly used to make permanent magnets, notably neodymium-iron-boron magnets -- about 10 times more powerful than conventional ones.

From Barron's

Under the scheme, selected manufacturers will receive capital and sales-linked incentives to produce 6,000 tonnes of permanent magnets a year within seven years.

From BBC

Rare earths are used in high-performance permanent magnets needed for aircraft, electric vehicles, medical-imaging machines and many other technologies.

From The Wall Street Journal

The problem: Even at the new factory’s initial planned capacity of 2,000 metric tons of permanent magnet material, the plant will produce a fraction of what analysts estimate European manufacturers need.

From The Wall Street Journal