silicon
//ˈsɪlɪkən//
Noun
1
A chemical element (symbol Si, atomic number 14) that is a hard, brittle, crystalline solid with a blue-grey metallic luster, used extensively in electronics and computer chips.
Silicon is the main material used to make computer chips.
2
The material used to make semiconductor devices, microprocessors, and integrated circuits.
Silicon is the main material used in computer chips.