永えい久きゅう磁じ石しゃく

え

い

きゅ

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じ

しゃ

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Meanings

1

permanent magnet

A magnet that retains its magnetism without an external electric current; used in physics, engineering, and everyday contexts.

。

A permanent magnet retains its magnetism even without an electric current.

冷れい蔵ぞう庫こに永えい久きゅう磁じ石しゃくでメモを貼はり付つけた。

I stuck a note on the refrigerator with a permanent magnet.

電でん磁じ石しゃく
電磁石 is an electromagnet, which requires an electric current to generate magnetism, unlike 永久磁石.

電でん磁じ石しゃく
永久磁石 keeps its magnetism permanently without electricity, whereas 電磁石 is only magnetic while electric current is flowing through it.

Compound of 永久 (eternal, permanent) and 磁石 (magnet). The term is a straightforward technical compound.