ferric oxide


Definition of ferric oxide

: the red or black oxide of iron Fe2O3 found in nature as hematite and as rust and also obtained synthetically and used especially in magnetic materials, as a pigment, and for polishing

Examples of ferric oxide in a Sentence

Recent Examples on the Web Two irons and three oxygens make ferric oxide, or Fe2O3—a complete picture that’s hard to pull apart. Matthew Hutson, The New Yorker, 18 Sep. 2021 So, all in all, Mars is red because of hematite, which is a red form of ferric oxide. Ethan Siegel, Forbes, 11 Mar. 2021 The greatest elevations occur in the ferric oxide-rich Tharsis region, but in the lowlands to the east of it, the abundances of ferric oxides plummets. Ethan Siegel, Forbes, 11 Mar. 2021 And the worldwide shortage of gamma ferric oxide has brought tape production to a crawl. David Grossman, Popular Mechanics, 11 Oct. 2019 The team also found that the asteroid’s chemistry was dominated by compounds called ferric oxides and phyllosilicates, which had never been seen before on Kuiper belt objects. New York Times, 10 May 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ferric oxide.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ferric oxide

1851, in the meaning defined above

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Time Traveler for ferric oxide

Time Traveler

The first known use of ferric oxide was in 1851

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Dictionary Entries Near ferric oxide

ferric chloride

ferric oxide

ferric sulfate

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Statistics for ferric oxide

Cite this Entry

“Ferric oxide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ferric%20oxide. Accessed 22 Jan. 2022.

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More Definitions for ferric oxide

ferric oxide


Medical Definition of ferric oxide

: the red or black oxide of iron Fe2O3 found in nature as hematite and as rust and also obtained synthetically and used as a pigment and for polishing


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