8 letters · 10 points in Scrabble
noun a hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
originA New Latin word derived by Swedish chemist Anders Gustaf Ekeberg in 1802, from Latin Tantalus, named after Tantalus, alluding to the element's incapacity to absorb acid. See -ium.
Etymology from Wiktionary, CC BY-SA 3.0