First Known Use: circa 1801
Dictionary
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)
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Origin of SILICA
New Latin, from Latin silic-, silex hard stone, flint
Medical Dictionary
silica
noun sil·i·ca \ˈsil-i-kə\
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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