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silicon

sil·i·con

silicon

 
pronunciation:
sI lih kan [or] sI lih kn
features:
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part of speech: noun
definition: a hard, dark gray substance that is a chemical element. It is found in silica, a compound that makes up one fourth of the earth's crust. Silicon is used in making glass, concrete, bricks, and computer chips. (symbol: Si)
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  element