Definition of silicon noun from the Oxford Advanced Learner's Dictionary

 

silicon

 noun
noun
BrE BrE//ˈsɪlɪkən//
 
; NAmE NAmE//ˈsɪlɪkən//
 
[uncountable](symbol Si)
 
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a chemical element. Silicon exists as a grey solid or as a brown powder and is found in rocks and sand. It is used in making glass and transistors. Word Origin early 19th cent.: alteration of earlier silicium, from Latin silex, silic- ‘flint’, on the pattern of carbon and boron.
See the Oxford Advanced American Dictionary entry: silicon

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