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si

[see]
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noun Music.
  1. the syllable used for the seventh tone of a scale and sometimes for the tone B.
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Origin of si

First recorded in 1720–30; see origin at gamut

Si

Symbol, Chemistry.
  1. silicon.
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SI

S.I.

  1. Sandwich Islands.
  2. Staten Island.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for si

Contemporary Examples

Historical Examples

  • Si sed: "Yas; counted 'em on the wagon, counted 'em off agin, and counted 'em when I made 'em."

  • Si monumentum requiris, circumspice; it points us back to London.

    Howards End

    E. M. Forster

  • "Si———" began Csar, but the protest foundered in his dry throat.

    The Manxman

    Hall Caine

  • Si señor, a good padrone are you, and water it will be found for you.

    The Treasure Trail

    Marah Ellis Ryan

  • "You kin go, sir, and report to them people that it won't be did," answered Si firmly.


British Dictionary definitions for si

si1

noun
  1. music a variant of te
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si2

the internet domain name for
  1. Slovenia
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Si1

Si Kiang

noun
  1. a variant transliteration of the Chinese name for the Xi
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Si2

the chemical symbol for
  1. silicon
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SI

symbol for
  1. Système International (d'Unités)See SI unit
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abbreviation for
  1. NZ South Island
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Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for si

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

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Online Etymology Dictionary, © 2010 Douglas Harper

si in Medicine

Si

  1. The symbol for the elementsilicon

SI


si in Science

Si

silicon

[sĭlĭ-kŏn′]
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.