si

[see] /si/
noun, Music.
1.
the syllable used for the seventh tone of a scale and sometimes for the tone B.
Origin
1720-30; see gamut

SI

1.
International System of Units.

Si

Symbol, Chemistry
1.
silicon.

S.I.

1.
Sandwich Islands.
2.
Staten Island.
British Dictionary definitions for si

si1

/siː/
noun
1.
(music) a variant of te

si2

abbreviation
1.
Slovenia

Si1

/ʃiː/
noun
1.
a variant transliteration of the Chinese name for the Xi

Si2

Chemical symbol
1.
silicon

SI

symbol
1.
Système International (d'Unités) See SI unit
abbreviation
2.
(NZ) South Island

Xi

/ʃiː/
noun
1.
a river in S China, rising in Yunnan province and flowing east to the Canton delta on the South China Sea: the main river system of S China. Length: about 1900 km (1200 miles)
Word Origin and History for si

"yes" in Italian, Spanish, Portuguese; from Latin sic "so" (see sic).

si in Medicine

Si
The symbol for the element silicon.

SI abbr.
Système International (d'Unités) (International System of Units)

si in Science
Si  
The symbol for silicon.
silicon
  (sĭl'ĭ-kŏn')   
Symbol Si
A metalloid element that occurs in both gray crystalline and brown noncrystalline forms. It is the second most abundant element in the Earth's crust and can be found only in silica and silicates. Silicon is used in glass, semiconductors, concrete, and ceramics. Atomic number 14; atomic weight 28.086; melting point 1,410°C; boiling point 2,355°C; specific gravity 2.33; valence 4. See Periodic Table.
si in Technology

1. Système International.
2. Shift In.

networking
The country code for Slovenia.
(1999-01-27)

Related Abbreviations for si

si

Sinhalese

sI

6-mercaptopurine ribonucleoside

Si

  1. silicon
  2. Wisdom of Jesus, the Son of Sirach

SI

  1. sacroiliac joint
  2. secondary infertility
  3. Smithsonian Institution
  4. French Système International [d'Unités] (International System [of Units])