Longman Dictionary of Contemporary English homepage

Date: 1800-1900
Origin: silica

silicon

 noun
     
Related topics: Elements, Computers
sil‧i‧con [uncountable]
TDHCE a chemical substance that exists as a solid or as a powder and is used to make glass, bricks, and parts for computers. It is a chemical element: symbol Si
Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.

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