silica

noun sil·i·ca \ ˈsi-li-kə \
|Updated on: 31 Jul 2018

Definition of silica

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

Recent Examples of silica from the Web

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Origin and Etymology of silica

New Latin, from Latin silic-, silex hard stone, flint


SILICA Defined for English Language Learners

silica

Definition of silica for English Language Learners

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


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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