Si
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SI
abbr. French
Système International [d'Unités] (International System [of Units])
Si 1
The symbol for silicon.
Si 2
abbr. Bible
Sirach
si
(sē)n. Music
Ti.
[Italian, from Medieval Latin; see gamut.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
si
(siː)n
(Classical Music) music a variant of te
si
the internet domain name for
(Computer Science) Slovenia
Si
(ʃiː) orSi Kiang
n
(Placename) a variant transliteration of the Chinese name for the Xi
Si
the chemical symbol for
(Elements & Compounds) silicon
SI
symbol for
(Units) Système International (d'Unités). See SI unit
abbreviation for
(Placename) NZ South Island
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
SI
International System of Units.
[< French S(ystème) I(nternationale d'Unités)]
Si
Chem. Symbol. silicon.
S.I.
Staten Island.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
Si
The symbol for silicon.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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| Noun | 1. |  Si - 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 transistorschemical element, element - any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter quartz - a hard glossy mineral consisting of silicon dioxide in crystal form; present in most rocks (especially sandstone and granite); yellow sand is quartz with iron oxide impurities clay - a very fine-grained soil that is plastic when moist but hard when fired semiconducting material, semiconductor - a substance as germanium or silicon whose electrical conductivity is intermediate between that of a metal and an insulator; its conductivity increases with temperature and in the presence of impurities feldspar, felspar - any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium granite - plutonic igneous rock having visibly crystalline texture; generally composed of feldspar and mica and quartz sand - a loose material consisting of grains of rock or coral silicone, silicone polymer - any of a large class of siloxanes that are unusually stable over a wide range of temperatures; used in lubricants and adhesives and coatings and synthetic rubber and electrical insulation |
| 2. | SI - 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" International System, International System of Units, SI system, SI unit, Systeme International, Systeme International d'Unites metric system - a decimal system of weights and measures based on the meter and the kilogram and the second | |
| 3. | si - the syllable naming the seventh (subtonic) note of any musical scale in solmization solfa syllable - one of the names for notes of a musical scale in solmization |
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations
SI
N ABBR =Système Internationale (d'unités) (= system of metric units) → sistema m métrico internacionalCollins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005
SI
[ˌɛsˈaɪ] n abbr =Système International (d'unités) → S.I. m =sistema internazionale (di misura)Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995