Meaning of TANTALUM in English

TANTALUM

[tan.ta.lum] n [NL, fr. L Tantalus; fr. its inability to absorb acid] (1802): a hard ductile gray-white acid-resisting metallic element of the vanadium family found combined in rare minerals (as tantalite and columbite)

Merriam-Webster English vocab.      Английский словарь Merriam Webster.