Any of various oxides of iron, such as ferric oxide or ferrous oxide.
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How to use iron oxide in a sentence
An iron oxide called hematite improves tone, and acetylglucosamine, an enzyme derived from sugar, exfoliates for extra glow.
The iron oxide is put in it to make it more basic for the chemical reaction that is to take place.The Iron Puddler | James J. Davis
For the next seven minutes I "thickened the heat up" by adding iron oxide to the bath.The Iron Puddler | James J. Davis
The latter being separated by caustic potash, the iron oxide may be also washed, dried, and weighed.A Dictionary of Arts, Manufactures and Mines | Andrew Ure
The liquor is often tinged yellow by carbon, after it has ceased to contain a single trace of iron oxide.A Dictionary of Arts, Manufactures and Mines | Andrew Ure
There are others; but take it thus—that the iron oxide is a red pigment, and the others are introduced, mainly, to modify this.Stained Glass Work | C. W. Whall