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

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See Examples For:

iron oxide

Scientists have known for years that iron oxide minerals help store vast amounts of carbon by keeping it out of the atmosphere.

From Science Daily ● Feb. 9, 2026

Together, these mechanisms make iron oxide minerals highly adaptable carbon binders.

From Science Daily ● Feb. 9, 2026

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

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

From "The Martian" by Andy Weir

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