ferric oxide

== English == === Noun === ferric oxide (uncountable) (chemistry) The chemical compound Fe2O3, iron oxide where iron has a valence of +3. Synonyms: iron(III) oxide, crocus of Mars (obsolete) Hypernyms: oxide < compound, material Coordinate terms: ferrous oxide, iron(II) oxide ==== Usage notes ==== IUPAC has deprecated this term in favor of iron(III) oxide. ==== Translations ====