Definition of tantalum noun from the Oxford Advanced Learner's Dictionary



BrE BrE//ˈtæntələm//
; NAmE NAmE//ˈtæntələm//
[uncountable] (symbol Ta)
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a chemical element. Tantalum is a hard silver-grey metal used in the production of electronic parts and of metal plates and pins for connecting broken bones. Word Originearly 19th cent.: from Tantalus (a Lydian king in Greek mythology), with reference to its frustrating insolubility in acids.
See the Oxford Advanced American Dictionary entry: tantalum