Meaning of TANTALUM in English

TANTALUM

( n. )

A rare nonmetallic element found in certain minerals, as tantalite, samarskite, and fergusonite, and isolated as a dark powder which becomes steel-gray by burnishing. Symbol Ta. Atomic weight 182.0. Formerly called also tantalium.

Webster's Revised Unabridged English Dictionary.      Пересмотренный полный словарь английского языка Webster.