magnetite

Noun
Synonyms: magnetic iron-ore

WordNet 3.0

Noun (1)

  1. an oxide of iron that is strongly attracted by magnetsSynonyms: magnetic iron-ore
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Webster's Dictionary (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]
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