磁铁矿
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}.
magnetite
n : an oxide of iron that is strongly attracted by magnets [syn:
{magnetic iron-ore}]