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silicon, Si, atomic 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 | |
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Systeme International d'Unites, Systeme International, SI system, SI, SI unit, International System of Units, International System | a complete metric system of units of measurement for scientists; fundamental quantities are length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela) | |
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ti, te, si | the syllable naming the seventh (subtonic) note of any musical scale in solmization |