iron(II,III) oxide

== English == === Noun === iron(II,III) oxide (uncountable) (chemistry) The chemical compound Fe3O4. Synonym: magnetite (broad sense) Hypernym: iron oxide Coordinate terms: iron(II) oxide, ferrous oxide (dated), iron(III) oxide, ferric oxide (dated) Near-synonym: black oxide ==== Usage notes ==== This is the IUPAC preferred nomenclature. The old term was ferrous-ferric oxide.