s 1 i 1 m 3 a 1
4 letters · 6 points in Scrabble
Meaning
noun rock that form the continuous lower layer of the earth's crust; rich in silicon and magnesium
originCoined by Eduard Suess in 1909, in Das Antlitz der Erde, as a blend of silicon + magnesium.
Etymology from Wiktionary, CC BY-SA 3.0