silica

noun

Stress: first syllable

Syllables: sil-i-ca (3)
English Definition

A hard, unreactive, colorless compound occurring as quartz and in sandstone.

Example Sentence

Quartz is composed of pure silica.

US IPA /ˈsɪlɪkə/
UK IPA /ˈsɪlɪkə/

Synonyms

silicon dioxide quartz sand silicate

Antonyms

organic matter carbon