lutetium
noun
lu·te·tium
lü-ˈtē-sh(ē-)əm 
: a metallic chemical element of the rare-earth group that has few practical applications but is sometimes used as a catalyst in cracking and as a radiation source for treatment of certain cancers see Chemical Elements Table
Examples of lutetium in a Sentence
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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
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
Rare-earth metals and elements such as lanthanum and lutetium are raw materials of which there are limited concentrated deposits, according to the U.S. Geological Survey.
—Mike Snider, USA TODAY, 1 Mar. 2025
Anchored at these target sites, the lutetium isotope then releases two types of radiation that aid in cancer treatment.
—Discover Magazine, 8 July 2024
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Dylan Butts, CNBC, 15 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
Rare-earth metals and elements such as lanthanum and lutetium are raw materials of which there are limited concentrated deposits, according to the U.S. Geological Survey.
—Mike Snider, USA TODAY, 1 Mar. 2025
Anchored at these target sites, the lutetium isotope then releases two types of radiation that aid in cancer treatment.
—Discover Magazine, 8 July 2024
See All Example Sentences for lutetium
Cite this Entry
“Lutetium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/lutetium. Accessed 4 May. 2025.
Copy CitationKids Definition
lutetium
noun
lu·te·tium
lü-ˈtē-sh(ē-)əm
: a soft metallic chemical element see element
Medical Definition
lutetium
noun
lu·te·tium
variants
also lutecium
: a metallic element of the rare-earth group
—symbol Lu
see Chemical Elements Table
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