- noun a metal component that always has a magnetic influence
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- noun a magnetic material such as hardened steel that has been strongly magnetized and retains its magnetism indefinitely; used in electric machines
- A high-retentivity material, such as alnico alloy or certain steels, which can be magnetized sufficiently to retain its magnetism indefinitely. Permanent magnets have applications in various areas of electronics, including their use in sensing devices and speakers. Its abbreviation is PM.