6 letters · 9 points in Scrabble
noun a silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in se
originCoined by British chemist Humphry Davy in 1808, from soda + -ium.
Etymology from Wiktionary, CC BY-SA 3.0