: a metallic element with atomic number 39 usually included in the rare-earth group that occurs usually with other rare earth elements in minerals and is used especially in phosphors, YAG lasers, alloys, and treatments for certain cancers see Chemical Elements Table
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Clinicians experimented with different radioactive payloads under compassionate-use protocols that allow seriously ill patients to have access to experimental treatments, using unstable forms of elements like yttrium and indium before largely coalescing around an isotope of lutetium.
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Discover Magazine, 8 July 2024
The aquatic plant contains the elements platinum and rhodium, along with rare-earth elements like neodymium, lanthanum, yttrium and dysprosium.
—Devika Rao, theweek, 22 May 2024
The tape is made up of yttrium barium copper oxide deposited on a steel substrate.
—IEEE Spectrum, 15 July 2023
These new materials, such as the ceramic known as yttrium barium copper oxide, became a superconductor at 93 Kelvin—still cold, but not absolute-zero cold.
—Darren Orf, Popular Mechanics, 15 Aug. 2023
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Discover Magazine, 8 July 2024
The aquatic plant contains the elements platinum and rhodium, along with rare-earth elements like neodymium, lanthanum, yttrium and dysprosium.
—Devika Rao, theweek, 22 May 2024
The tape is made up of yttrium barium copper oxide deposited on a steel substrate.
—IEEE Spectrum, 15 July 2023
These new materials, such as the ceramic known as yttrium barium copper oxide, became a superconductor at 93 Kelvin—still cold, but not absolute-zero cold.
—Darren Orf, Popular Mechanics, 15 Aug. 2023
See all Example Sentences for yttrium
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“Yttrium.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/yttrium. Accessed 28 Nov. 2024.
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yttrium
noun
yt·tri·um
ˈi-trē-əm 
: a trivalent metallic element usually included among the rare earth elements which it resembles chemically and with which it occurs in minerals
—symbol Y
see Chemical Elements Table
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