noun
- one of the forms of pure metallic iron, having high magnetic permeability and occurring as a constituent of ordinary iron and steel
- any of various ceramic, magnetic materials with poor electrical conductivity, containing ferric oxide and another metallic oxide: used in recording tape and computer memories
- Geol. a grain, scale, or bit of red, brown, or yellow iron oxide in a rock
Origin:
< L ferrum, iron + -ite