terbium
noun/ˈtɜːbiəm/
/ˈtɜːrbiəm/
[uncountable] (symbol Tb)
- a chemical element. Terbium is a silver-white metal used in lasers, X-rays and television tubes.Word Originmid 19th cent.: modern Latin, from Ytterby, the name of a village in Sweden where it was discovered. Compare with erbium and ytterbium.
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terbium