How to Use thulium in a Sentence
thulium
noun-
The mystery centered on a compound made of thulium, selenium, and tellurium (TmSe₁₋ₓTeₓ).
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Aman Tripathi,
Interesting Engineering,
2 Nov. 2025
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The breakthrough was the development of solid-state lasers that use bundles of glass fibers doped with exotic elements like ytterbium, erbium, and thulium along with aluminum, germanium, and phosphorus.
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New Atlas,
17 Jan. 2026
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Set up with a mass spectrometer called FIONA, the apparatus can create heavy elements by firing a beam of calcium isotopes into a target of thulium and lead.
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David Szondy
august 27,
New Atlas,
27 Aug. 2025
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In its most recent move, China added five rare-earth elements – holmium, erbium, thulium, europium, ytterbium, and related magnets and materials – to its existing control list, requiring export licenses.
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Ramishah Maruf,
CNN Money,
11 Oct. 2025
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Earlier this month, China added five rare-earth elements – holmium, erbium, thulium, europium, ytterbium, and related magnets and materials – to its existing control list, requiring export licenses.
—
Ramishah Maruf,
CNN Money,
30 Oct. 2025
Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'thulium.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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