TANTALUM

tantalum, Ta, atomic number

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

Source: WordNet® 3.1

Etymology

Noun

tantalum (countable and uncountable, plural tantalums)

A chemical element (symbol Ta) with atomic number 73: a rare, hard, blue-gray, lustrous transition metal that is highly corrosion-resistant.

Source: Wiktionary

Tan"ta*lum, n. Etym: [NL. So named on account of the perplexity and difficulty encounterd by its discoverer (Ekeberg) in isolating it. See Tantalus.] (Chem.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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