Silicon

Of element, quartz, clay, feldspar, semiconductor, silicone, granite and sand.   May also be referred to as Si and atomic number 14.

A tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors.

This concept's ID is @1~73994