samarium
noun
sa·mar·i·um
sə-ˈmer-ē-əm 
: 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
Ars Video Rare but not irreplaceable The export controls China announced earlier this month cover samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium—seven elements that belong to what is known as the rare earth family.
—
ArsTechnica, 24 Apr. 2025
Rare but Not Irreplaceable The export controls China announced earlier this month cover samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium—seven elements that belong to what is known as the rare earth family.
—Zeyi Yang, Wired News, 23 Apr. 2025
One of those elements is samarium, a silvery metal that is a critical component in magnets used in SpaceX’s rocket propulsion systems and in those of other U.S. aerospace and defense companies, says Tinglong Dai of Johns Hopkins.
—John Hyatt, Forbes.com, 8 Apr. 2025
The new restrictions — which encompass the medium and heavy rare earth elements samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium — will require Chinese companies to secure special licenses to export the resources.
—Dylan Butts, CNBC, 15 Apr. 2025
On Friday, Chinese officials announced the country will require licenses for export of samarium and six other rare-earth elements; exporters of the minerals will need to apply for export licenses through China’s Ministry of Commerce.
—John Hyatt, Forbes.com, 8 Apr. 2025
China's Ministry of Commerce said seven categories of medium and heavy rare earths, including samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium-related items would be on this list.
—John W. Dean, MSNBC Newsweek, 7 Apr. 2025
Advertisement Advertisement Included in the list of minerals subject to controls was samarium and its compounds, which are used in aerospace manufacturing and the defense sector.
—Time, 4 Apr. 2025
Included in the list of minerals subject to controls was samarium and its compounds, which are used in aerospace manufacturing and the defense sector.
—Arkansas Online, 4 Apr. 2025
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ArsTechnica, 24 Apr. 2025
Rare but Not Irreplaceable The export controls China announced earlier this month cover samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium—seven elements that belong to what is known as the rare earth family.
—Zeyi Yang, Wired News, 23 Apr. 2025
One of those elements is samarium, a silvery metal that is a critical component in magnets used in SpaceX’s rocket propulsion systems and in those of other U.S. aerospace and defense companies, says Tinglong Dai of Johns Hopkins.
—John Hyatt, Forbes.com, 8 Apr. 2025
The new restrictions — which encompass the medium and heavy rare earth elements samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium — will require Chinese companies to secure special licenses to export the resources.
—Dylan Butts, CNBC, 15 Apr. 2025
On Friday, Chinese officials announced the country will require licenses for export of samarium and six other rare-earth elements; exporters of the minerals will need to apply for export licenses through China’s Ministry of Commerce.
—John Hyatt, Forbes.com, 8 Apr. 2025
China's Ministry of Commerce said seven categories of medium and heavy rare earths, including samarium, gadolinium, terbium, dysprosium, lutetium, scandium and yttrium-related items would be on this list.
—John W. Dean, MSNBC Newsweek, 7 Apr. 2025
Advertisement Advertisement Included in the list of minerals subject to controls was samarium and its compounds, which are used in aerospace manufacturing and the defense sector.
—Time, 4 Apr. 2025
Included in the list of minerals subject to controls was samarium and its compounds, which are used in aerospace manufacturing and the defense sector.
—Arkansas Online, 4 Apr. 2025
Cite this Entry
“Samarium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/samarium. Accessed 5 May. 2025.
Copy CitationKids Definition
samarium
noun
sa·mar·i·um
sə-ˈmer-ē-əm
-ˈmar-
: a pale gray shiny metallic element see element
Medical Definition
samarium
noun
sa·mar·i·um
sə-ˈmer-ē-əm, -ˈmar-
: a pale gray lustrous metallic element used especially in alloys that form permanent magnets
—symbol Sm
see Chemical Elements Table
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