Meaning & Definition of Si in English
English⟶
Si
/si/
noun
1. 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
synonym:
- silicon,
- Si,
- atomic number 14
2. 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"
synonym:
- Systeme International d'Unites,
- Systeme International,
- SI system,
- SI,
- SI unit,
- International System of Units,
- International System
3. The syllable naming the seventh (subtonic) note of any musical scale in solmization
synonym:
- ti,
- te,
- si