from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A magnesium iron oxide mineral, a member of the magnetite series of spinels, which forms black metallic octahedral crystals.
from The Century Dictionary and Cyclopedia
- n. An oxid of magnesium and iron, belonging to the spinel group, which has been observed at Vesuvius. Also magnoferrite.
magnesio- + ferrite (Wiktionary)