Magnetite

2 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  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}.


     [1913 Webster]

From WordNet (r) 2.0 [wn]:

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