Definition of "lodestones" [lodestones]

• Plural form of lodestone. (noun)

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• "The fact that lodestones are found only at shallow depth seems to support the lightning theory."
• "Like other types of magnetite, they are hard, black and shiny, but lodestones are special because they are naturally magnetised, thanks to the effects of lightning."
• "Wasilewski has proved that magnetite samples can be magnetised in the laboratory, though it's hard to show this occurs in nature until a magnetite outcrop can be checked before and after a lightning strike for the presence of lodestones."