magnetite
mag-net-ite · noun
Definitions
noun
- 1.
A black iron oxide mineral (Fe3O4) that is strongly magnetic and an important iron ore.
- 2.
A naturally occurring magnetic mineral, historically significant as the earliest discovered magnet.
Forms
plural: magnetites
Related words
Etymology
From German Magnetit, from Greek Magnētis lithos meaning "Magnesian stone," referring to the region of Magnesia.