Dictionary › S › si
si
1 syllableYour browser doesn’t have built-in voices. Try Chrome, Edge or Safari.
As a noun, si means a syllable used in solfège to represent the seventh note of a major scale.
Meanings of si
3 meaningsnoun
musicA syllable used in solfège to represent the seventh note of a major scale.
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”
Similar: Systeme International d'Unites, Systeme International, SI system, SI unit, International System of Units, International SystemA 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
Similar: silicon, atomic number 14
Meanings from Wiktionary (CC BY-SA 4.0) and Open English WordNet (CC BY 4.0).