based on silicon; especially used of a proposed alternative biochemistry or lifeforms

(chemistry) A binary compound of silicon and carbon, SiC; it is one of the hardest known materials, and is used as an abrasive, under the trade name Carborundum, and as a refractory material.

(chemistry) An inorganic polymer, of empirical formula Si₃N₄, used in ceramics and some transistors.

(physics, astronomy) the nucleosynthesis process, in stars where temperatures exceed 3x10⁹K, in which silicon undergoes photodisintegration to form fragments which in turn produce elements of atomic number up to 60, peaking at iron

An alloy of iron and silicon that has important magnetic properties.

The area of high-tech businesses in Israel.

The area of high-tech businesses around Portland, Oregon.

(inorganic chemistry) The binary compound of silicon and chlorine SiCl₄.

(inorganic chemistry) silicon dioxide (SiO₂), silica. / (inorganic chemistry) silicon monoxide (SiO).

(inorganic chemistry) The binary compound, SiGe of silicon and germanium; sometimes considered to be a simple alloy silicon germanium.