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

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.

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

From Barron's • Feb. 4, 2026

In addition to ferrihydrite the researchers used various quantities of iron oxide phases like magnetite, hematite, feroxyhyte and schwertmannite.

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

The cement made through this recycling process contains higher levels of iron oxide than conventional cement, but the researchers say this has little effect on performance.

From Science Daily • May 22, 2024

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