1A piece of magnetite or other naturally magnetized mineral, able to be used as a magnet.
- ‘Electromagnetic fields and radiation have, perhaps through their historical associations with magnetic lodestones and electrical storms, been linked to forces of nature that are not readily understood.’
- ‘Gilbert carried out many other experiments, including the study of spherical lodestones that were floated on water in small wooden boats.’
- 1.1 A naturally magnetized mineral; magnetite.
- ‘For example, there is an interesting rock called lodestone.’
- ‘Why did lodestone have the power to attract certain metals?’
- ‘It holds a very sharp edge, and lodestone does not attract it.’
- ‘Then there were real sparks as someone hit a lodestone, and a candle ignited in front of my face.’
- ‘They floated a piece of lodestone, a naturally-occurring magnetic mineral, on a piece of wood in a bowl of water with its ‘poles’ horizontally opposite to one another so that it could rotate and line up with the Earth's poles.’
- ‘Geomagnetic measurements owe their beginning to an uncommon rock: lodestone.’
- 1.2 A thing that is the focus of attention or attraction.
- ‘Santa Fe has been a lodestone for the study, idealization, and romanticization of the American Indian since the completion of the Atchison, Topeka, and Santa Fe Railway.’
- ‘Attendance at the Army War College (as well as the other senior service colleges) should remain the lodestone of the profession of arms.’
- ‘It is the ideological lodestone of a political movement that has shoved the entire American political center to the right.’
- ‘West also believes the musical genre of the blues is a philosophical lodestone for successful democracy.’
- ‘Little recognized in this country is that the scope and pervasiveness of American power is now the lodestone for every other country in the pursuit of its own interests.’
We take a look at several popular, though confusing, punctuation marks.