(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

(chemistry) Any hydride of silicon; a silane.

A technology-rich area of South Wales.

(chemistry) Any compound of general formula Si(OR)₄, the tetraalkyl orthosilicates; they react with water to for aerogels of silica.

(chemistry) Any compound of silicon containing multiple alkoxide groups.

An area in Manhattan, New York, which is home to a group of Internet-related companies.

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

A wafer of silicon on which an integrated circuit has been built; a microchip