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silica Definition

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silica
noun(sil-i-ca)
the dioxide of silicon SiO2 occurring in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively)
silica
noun(sil-i-ca)
colloidal silica resembling coarse white sand in appearance but possessing many fine pores and therefore extremely adsorbent
silica
noun(sil-i-ca)
a chemically stable and refractory glass made from silica alone
silica
noun(sil-i-ca)
quartz glass —called also fused silica

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