silicon

Definition of Silicon in English :

Noun

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

WordNet Lexical Database for English. Princeton University. 2010.

Silicon

see synonyms of silicon

noun

a.

a brittle metalloid element 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. Symbol: Si; atomic no: 14; atomic wt: 28.0855; valency: 4; relative density: 2.33; melting pt: 1414°C; boiling pt: 3267°C

b. (modifier; sometimes capital)

denoting an area of a country that contains a density of high-technology industry

Silicon

see synonyms of silicon

noun

a nonmetallic chemical element occurring in several forms, found always in combination, and more abundant in nature than any other element except oxygen, with which it combines to form silica: used in the manufacture of transistors, solar cells, rectifiers, silicones, ceramics, etc.: symbol, Si; at. no., 14

see the periodic table of elements in the Reference Supplement

Silicon

see synonyms of silicon

n. Symbol Si

A nonmetallic element occurring extensively in the earth's crust in silica and silicates, having both a brown amorphous and a gray lustrous crystalline allotrope, and used doped or in combination with other materials in glass, semiconducting devices, concrete, brick, refractories, pottery, and silicones. Atomic number 14; atomic weight 28.086; melting point 1,414°C; boiling point 3,265°C; specific gravity 2.33 (25°C); valence 2, 4. See Periodic Table.

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Noun

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