单词	ferrosoferric oxide
释义	ferrosoferric oxide noun fer·​ro·​so·​ferric oxide fə|¦rōsə, fe|+…- : a black magnetic iron oxide Fe3O4 found in nature as magnetite, also obtained synthetically (as from iron by heating in steam or from a ferrous salt and an alkali by precipitation and oxidation), and used chiefly as a pigment and polishing material called also iron(II,III) oxide Word History Etymology International Scientific Vocabulary ferroso- + ferric First Known Use 1825, in the meaning defined above
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