| |||
| magnetic iron oxide; ferroso-ferric oxide; magnetite (min.) | |||
| |||
| magnetite (min.); magnetic iron ore (min.); loadstone (min., min.) | |||
| black iron ore; lodestone | |||
| magnetic iron (ore); black oxide of iron | |||
| magnetite | |||
|
magnetite : 8 phrases, 6 sujets |
| Agriculture | 1 |
| Charbon | 1 |
| Chimie | 2 |
| Génie mécanique | 1 |
| Métallurgie | 1 |
| Physique nucléaire | 2 |