'Loadstone' definitions:

Definition of 'loadstone'

From: WordNet
noun
A permanent magnet consisting of magnetite that possess polarity and has the power to attract as well as to be attracted magnetically [syn: lodestone, loadstone]

Definition of 'Loadstone'

From: GCIDE
  • 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. [1913 Webster]

Definition of 'loadstone'

From: 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]