si

Dictionary.com Unabridged

Si

Symbol, Chemistry.

S.I.

1.
Sandwich Islands.
2.
Staten Island.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
si1 (siː)
 
n
music a variant of te

si2
 
the internet domain name for
Slovenia

Si or Si Kiang1 (ʃiː)
 
n
a variant transliteration of the Chinese name for the Xi
 
Si Kiang or Si Kiang1
 
n

Si2
 
the chemical symbol for
silicon

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

Xi, Hsi or Si (ʃiː)
 
n
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)
 
Hsi, Hsi or Si
 
n
 
Si, Hsi or Si
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Etymonline
Word Origin & History

si
"yes" in It., Sp., Port.; from L. sic "so" (see sic).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

Si
The symbol for the element silicon.

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

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Si  
The symbol for silicon.
silicon   (sĭl'ĭ-kŏn')  Pronunciation Key 
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.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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FOLDOC
Computing Dictionary

SI definition


1. Système International.
2. Shift In.

si definition

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

The Free On-line Dictionary of Computing, © Denis Howe 2010 http://foldoc.org
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American Heritage
Abbreviations & Acronyms
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])

The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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