iron oxide

American

[ahy-ern ahks-ahyd] / ˈaɪ ərn ˈɑks aɪd /

noun

an oxide of iron, especially ferric oxide.

iron oxide Scientific

Any of various oxides of iron, such as ferric oxide or ferrous oxide.

Other Word Forms

Derived Forms

Inflected Forms

Nouns

iron oxides

plural

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

iron oxide

Customs documents said the shipment carried iron oxide when it left the Balkan nation for Thailand.

From Barron's ● Feb. 4, 2026

It contains iron oxide, a chemical compound humans traditionally associate with a different reddish-orange substance: rust.

From Salon ● Mar. 1, 2025

"We found the combination of cement clinker and iron oxide is an excellent steelmaking slag because it foams and it flows well," said Dunant.

From Science Daily ● May 22, 2024

In iron ore, negatively charged iron is bound to positively charged oxygen, forming iron oxide, or rust.

From Science Magazine ● Apr. 30, 2024

The planet's famous red color is from iron oxide coating everything.

From "The Martian" by Andy Weir

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Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023