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Meaning of silicon

sil•i•con

Pronunciation: (sil'i-kun, -kon"), [key]
— n. Chem.
  1. a nonmetallic element, having amorphous and crystalline forms, occurring in a combined state in minerals and rocks and constituting more than one fourth of the earth's crust: used in steelmaking, alloys, etc. Symbol: Si; at. wt.: 28.086; at. no.: 14; sp. gr.: 2.4 at 20°C.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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