Found 2 items, similar to loadstone.
English → English (WordNet) Definition: loadstone loadstone n : a permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically [syn: lodestone]
English → English (gcide) Definition: loadstone 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]