Si

مترادف و متضاد si

1. symbol The syllable naming the seventh (subtonic) note of any musical scale in solmization
   Synonyms: silicon, ti, te, atomic number 14
2. noun 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)
   Synonyms: Systeme International d'Unites, Systeme International, SI system, si unit, international-system-of-units, international system