Word Study
si
WORDNET DICTIONARY
Noun si has 3 senses
- si(n = noun.substance) atomic number 14, silicon - 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; Array is a kind of chemical element, element, semiconducting material, semiconductor
- si(n = noun.quantity) international system, international system of units, si system, si unit, systeme international, systeme international d'unites - 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" is a kind of metric system
- si(n = noun.communication) te, ti - the syllable naming the seventh (subtonic) note of any musical scale in solmization; Array is a kind of solfa syllable
CIDE DICTIONARY
si, [It.].
A syllable applied, in solmization, to the note B; more recently, to the seventh tone of any major diatonic scale. It was added to Guido's scale by Le Maire about the end of the 17th century. [1913 Webster]
OXFORD DICTIONARY
si, abbr.
1 (Order of the) Star of India.
2 the international system of units of measurement (F Syst{egrave}me International).
1 (Order of the) Star of India.
2 the international system of units of measurement (F Syst{egrave}me International).
si, symb. Chem. the element silicon.
si, n. Mus. = TE.
Etymology
F f. It., perh. f. the initials of Sancte Iohannes: see GAMUT
For further exploring for "si" in Webster Dictionary Online
