silicon -
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
chemical element,
element the most favorable environment for a plant or animal; "water is the element of fishes"
semiconducting material,
semiconductor a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities
silicone,
silicone polymer any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation
clay United States politician responsible for the Missouri Compromise between free and slave states (1777-1852)
feldspar,
felspar any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
granite something having the quality of granite (unyielding firmness); "a man of granite"
quartz a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities
Silicon is the most common metalloid. It is a chemical element, which has the symbol Si and atomic number 14. A tetravalent metalloid, silicon is less reactive than its chemical analog carbon.
OmegaWiki Dictionary
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silicon A brittle metalloid element with symbol Si and atomic number 14 that exists in two allotropic forms; occurs principally in sand, quartz, granite, feldspar, and clay. It is usually a grey crystalline solid but is also found as a brown amorphous powder. It is used in transistors, rectifiers, solar cells, and alloys. Its compounds are widely used in glass manufacture, the building industry, and in the form of silicones.
