si

[ see ]

nounMusic.
  1. the syllable used for the seventh tone of a scale and sometimes for the tone B.

Origin of si

1
First recorded in 1720–30; see origin at gamut

Words Nearby si

Other definitions for Si (2 of 4)

Si

Symbol, Chemistry.
  1. silicon.

Other definitions for SI (3 of 4)

SI

Other definitions for S.I. (4 of 4)

S.I.

abbreviation
  1. Sandwich Islands.

  2. Staten Island.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use si in a sentence

British Dictionary definitions for si (1 of 5)

si1

/ (siː) /


noun
  1. music a variant of te

British Dictionary definitions for si (2 of 5)

si2

the internet domain name for
  1. Slovenia

British Dictionary definitions for Si (3 of 5)

Si1

Si Kiang

/ (ʃiː) /


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

British Dictionary definitions for Si (4 of 5)

Si2

the chemical symbol for
  1. silicon

British Dictionary definitions for SI (5 of 5)

SI

symbol for
  1. Système International (d'Unités): See SI unit

abbreviation for
  1. NZ South Island

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

Scientific definitions for Si

Si

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.