atomic number 14


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Related to atomic number 14: atomic number 16, atomic number 100
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Noun1.atomic number 14 - a tetravalent nonmetallic elementatomic number 14 - 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 - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter
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
clay - a very fine-grained soil that is plastic when moist but hard when fired
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
feldspar, felspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium
granite - plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz
sand - a loose material consisting of grains of rock or coral
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