Tantalum

[tæntәlәm]

Definition

(noun.) a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite.

Checker: Scott--From WordNet

Definition

(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.

Typed by Jody

Definition

n. a very rare metal of no practical importance discovered in 1801 closely allied to columbium or niobium.

Checked by Abby