iron(III) oxide

== English == === Etymology === From iron +‎ translingual III +‎ oxide. === Noun === iron(III) oxide (uncountable) (chemistry) The chemical compound Fe2O3: the iron oxide in which iron has a valence of +3. Synonym: ferric oxide (dated) Hypernym: iron oxide Coordinate term: iron(II) oxide ==== Usage notes ==== This is the IUPAC preferred nomenclature. The old term was ferric oxide. ==== Translations ==== ==== See also ====