sa·​mar·​i·​um | \ sə-ˈmer-ē-əm How to pronounce samarium (audio) \

Definition of samarium

: a silvery-white lustrous metallic element of the rare-earth group that is used especially in permanent magnets — see Chemical Elements Table

Examples of samarium in a Sentence

Recent Examples on the Web Known as the samarium-cobalt (SmCo) magnet, it was developed in the 1960s in the US and was far more powerful than previous permanent magnets. Mary Hui, Quartz, 14 May 2021 The first rare earth magnet to have been developed was based on the rare earth samarium and the transition metal cobalt. Mary Hui, Quartz, 14 May 2021 To the researchers' shock, perfectly doubled conductance happened in their samarium hexaboride experiment. Rachel Crowell, Scientific American, 9 July 2019 Even the more prized magnetic elements such as neodymium, dysprosium, praseodymium and samarium are humdrum enough that Apple Inc. uses rare-earth magnets to make its power cables stick in place. Washington Post, 31 May 2019 The observation, in a substance called samarium hexaboride, is still not understood. Quanta Magazine, 9 June 2016 The observation, in a substance called samarium hexaboride, is still not understood. Maggie Mckee, WIRED, 24 June 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'samarium.' 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 samarium

1879, in the meaning defined above

History and Etymology for samarium

New Latin, from French samarskite

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The first known use of samarium was in 1879

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Last Updated

28 Jul 2021

Cite this Entry

“Samarium.” Dictionary, Merriam-Webster, Accessed 26 Sep. 2021.

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More Definitions for samarium


sa·​mar·​i·​um | \ sə-ˈmer-ē-əm, -ˈmar- How to pronounce samarium (audio) \

Medical Definition of samarium

: a pale gray lustrous metallic element used especially in alloys that form permanent magnets symbol Sm — see Chemical Elements Table

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