iron oxide

noun

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

Examples of iron oxide in a Sentence

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Aerial fire suppressants are generally a mixture of water, ammonium phosphate — essentially fertilizer — and iron oxide, which is added to make the retardant visible, said Daniel McCurry, a civil and environmental engineering professor at the University of Southern California. Dillon Thomas, CBS News, 13 Jan. 2025 Quartzite offer a similar look as marble or granite, ranging from white to gray, with some shades of pink, red, yellow, or orange that may be present due to varying amount of iron oxide and other mineral impurities. Timothy Dale, Better Homes & Gardens, 10 Jan. 2025 In some places, red soils comprised of calcareous clay are rich in iron oxides that lend a bright red color as well as impressive weight and structure to the wines. Tom Hyland, Forbes, 7 Jan. 2025 Exposing an electrically conductive material, such as iron oxide, to a rapidly alternating magnetic field causes eddy currents to be created in the material. New Atlas, 4 Sep. 2024 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

Dictionary Entries Near iron oxide

Cite this Entry

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