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英英字典: Si


KK Pronunciation

〔 si 〕

Pronunciation

〔 si: 〕


Overview of noun si

The noun si has 3 senses


  • 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)

  • 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); "Today the United States is the only country in the world not totally committed to the Systeme International d'Unites")

  • ti, te, si -- (the syllable naming the seventh (subtonic) note of any musical scale in solmization)

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