- a very common black iron oxide mineral, Fe3O4, that is strongly attracted by magnets: an important iron ore.
- a black magnetic mineral, found in igneous and metamorphic rocks and as a separate deposit. It is a source of iron. Composition: iron oxide. Formula: Fe 3 O 4 . Crystal structure: cubic
More Definitions
- SWAMP RABBIT (noun) Definition, Meaning & Examples
- GRAPE HYACINTH (noun) Definition, Meaning & Examples
- PROVISO (noun) Definition, Meaning & Examples
- ATMOSPHERIC RIVER (noun) Definition, Meaning & Examples
- FLATULENCE (noun) Definition, Meaning & Examples
- PHONOGRAPHIC (noun) Definition, Meaning & Examples