iron oxide

noun

: any of several oxides of iron: such as
b
: the monoxide FeO of iron

Examples of iron oxide in a Sentence

Recent Examples on the Web
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Antioxidants, silica, vitamin E, and thermal spring water are featured too; plus, iron oxides which deliver a universal tint suitable for most skin types. Kiana Murden, Vogue, 2 May 2025 Similarly, oceans may shimmer red under intense tropical climates when red iron oxides form from the decay of the rock, and rivers pour it into the oceans. New Atlas, 27 Apr. 2025 In addition to iron oxide, Wang found that Mars dust is made up of many toxic components, including including silica, gypsum, chromium, and arsenic, among others. Madison Dapcevich, Discover Magazine, 25 Apr. 2025 Why Mars Is The Red Planet Mars’s surface is covered in a fine layer of iron oxide dust, which has been spread across the planet by wind over billions of years. Jamie Carter, Forbes, 25 Feb. 2025 See All Example Sentences for iron oxide

Word History

First Known Use

1790, in the meaning defined above

Time Traveler
The first known use of iron oxide was in 1790

Cite this Entry

“Iron oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iron%20oxide. Accessed 21 May. 2025.

Kids Definition

iron oxide

noun
: any of the oxides of iron
especially : ferric oxide

Medical Definition

iron oxide

noun
: any of several oxides of iron
especially : ferric oxide

More from Merriam-Webster on iron oxide

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