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8 ENTRIES FOUND:

silica

noun sil·i·ca \ˈsi-li-kə\

: a chemical that contains silicon, that is found in sand and quartz, and that is used to make glass

Full Definition of SILICA

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

Origin of SILICA

New Latin, from Latin silic-, silex hard stone, flint
First Known Use: circa 1801

silica

noun sil·i·ca \ˈsil-i-kə\   (Medical Dictionary)

Medical Definition of SILICA

:  the dioxide of silicon SiO2 that is used as an ingredient of simethicone and that occurs naturally in crystalline, amorphous, and impure forms (as in quartz, opal, and sand respectively)—called also silicon dioxide

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