n. 天然磁石, 有吸引力之物, 吸引人的东西

[化] 极磁铁矿; 天然磁石

[ noun ]
a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically
<noun.substance>

Loadstone \Load"stone`\, Lodestone \Lode"stone\, n. [Load, lode
+ stone.] (Min.)
A piece of magnetite, a magnetic iron ore, possessing
polarity like a magnetic needle, having the power to attract
as well as to be attracted magnetically. See {Magnetite}.

Magnetite \Mag"net*ite\, n. (Min.)
An oxide of iron ({Fe3O4}) occurring in isometric crystals,
also massive, of a black color and metallic luster. It is
readily attracted by a magnet and sometimes possesses
polarity, being then called {loadstone}. It is an important
iron ore. Called also {magnetic iron}.