WordNet-Online
Free dictionary and thesaurus of English. Definitions, synonyms, antonyms and more...
Hint: double-click any word to get it searched!

Google
 

si

 
Noun si has 3 senses
  1. Systeme International d'Unites, Systeme International, SI system, SI, International System of Units, International System - 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"
    --1 is a kind of metric system
  2. silicon, Si, atomic number 14 - 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 transistors
    --2 is a kind of chemical element, element; semiconductor, semiconducting material
    --2 is a substance of
     silicone, silicone polymer; clay; feldspar, felspar; granite; quartz; sand
  3. ti, te, si - the syllable naming the seventh (subtonic) note of any musical scale in solmization
    --3 is a kind of solfa syllable
shylock shyls shyly shyness shyp shyri shyst shyster si si mi si senor si system sia sial sialadenitis sialia sialid

Sponsored (shop thru our affiliate link to help maintain this site):

WordNet-Online
Home | Free dictionary software | Copyright notice | Contact us | Network & desktop search | Search My Network | LAN Find | Reminder software | Software downloads | WordNet dictionary | Automotive thesaurus