Medical Dictionary
3 ENTRIES FOUND:

silica

noun sil·i·ca \ˈsil-i-kə\

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
March 29, 2015
discomfit Hear it
To thwart or disconcert
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