thulium
noun/ˈθuːliəm/, /ˈθjuːliəm/
/ˈθuːliəm/
[uncountable] (symbol Tm)
- a chemical element. Thulium is a soft silver-white metal.Word Originlate 19th cent.: modern Latin, from Latin Thule (a country described by the ancient Greek explorer Pytheas), from Greek Thoulē, of unknown origin.
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thulium