permanent magnet
/ˈpɜːrmənənt ˈmæɡnɪt/ · per.ma.nent mag.net
noun
- A type of magnet that retains its magnetic properties indefinitely, unlike temporary magnets which lose their magnetic properties over time. The engineer used a permanent magnet to power the electric motor in the laboratory.
noun
- A magnet that is not easily demagnetized or loses its magnetic properties, often used in applications where a stable magnetic field is required. The researcher used a permanent magnet to study the behavior of magnetic materials in a controlled environment.
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Did you know? The first permanent magnet was discovered by the ancient Greeks, who found that lodestones, naturally magnetized pieces of iron ore, could attract small pieces of iron.