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silica

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silica

Main Entry:: sil·i·ca
Pronunciation:: \ˈsi-li-kə\
Function:: noun
Etymology:: New Latin, from Latin silic-, silex hard stone, flint
Date:: circa 1801

: the dioxide of silicon SiO₂ occurring in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively)

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