rare earth

noun

1
: any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals
2

Examples of rare earth in a Sentence

Recent Examples on the Web
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The deal comes just a week after the mining company announced a $400 million stock investment from the Defense Department designed to boost rare earth magnet supplies in the U.S. Danielle Chemtob, Forbes.com, 16 July 2025 China effectively has had a monopoly on global heavy rare-earth elements processing and has major shares of processing for other rare earths. Breana Noble, Boston Herald, 13 July 2025 The company also processes rare earth concentrate, though most of the final refining and magnet production still takes place in China. Micah McCartney, MSNBC Newsweek, 11 July 2025 The Pentagon, meanwhile, will become the largest shareholder in American rare earth miner MP Materials , via a $400 million investment in preferred stock. Jim Cramer, CNBC, 10 July 2025 See All Example Sentences for rare earth

Word History

First Known Use

1875, in the meaning defined at sense 1

Time Traveler
The first known use of rare earth was in 1875

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Cite this Entry

“Rare earth.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/rare%20earth. Accessed 22 Jul. 2025.

Medical Definition

rare earth

noun
1
: any of a group of similar oxides of metals or a mixture of such oxides occurring together in widely distributed but relatively scarce minerals
2
Last Updated: - Updated example sentences
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