iron sulfide

noun

: any of several sulfides of iron

Examples of iron sulfide in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Most copper, however, comes from chalcopyrite, a very common copper iron sulfide. — David Bressan, Forbes, 31 Dec. 2024 The hydrogen sulfide reacts with the iron content of the egg yolk, which precipitates into iron sulfide, a green-colored mineral. — Taylor Tobin, Southern Living, 2 Apr. 2026 The features are likely due to the presence of ferrous iron phosphate and iron sulfide, or the minerals vivianite and greigite, according to the researchers. — Ashley Strickland, CNN Money, 10 Sep. 2025 More strikingly, scientists recently reported signs of vivianite (an iron phosphate) and greigite (an iron sulfide). — Sharmila Kuthunur, Space.com, 3 Oct. 2025 See All Example Sentences for iron sulfide

Word History

First Known Use

1861, in the meaning defined above

Time Traveler
The first known use of iron sulfide was in 1861

Rhymes for iron sulfide

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Browse Nearby Words

ironstone china
iron sulfide
iron tree
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Cite this Entry

“Iron sulfide.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/iron%20sulfide. Accessed 7 Jul. 2026.

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Kids Definition

iron sulfide

noun
: a compound (as a pyrite) of iron and sulfur
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